Interesting Facts about Maths - gurukrupa
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Friday, August 22, 2014

Interesting Facts about Maths

Interesting Facts about Maths

=> Simplify 5 + 6 ÷ 2 -1
A. 7 B. 8 C. 4.5 D. 11
->Ans: 7
=> Find the value of x and y if “x + y = 8” and
“2x + 3y =19”
A (4,4) B (6,2)
C (7,1) D (5,3)
Ans:(5,3)
=> If the sum of two numbers is 20 and sum of
their reciprocals is 5/24 find the numbers.
A (13,7) B (11,9)
C (12,8) D (15,5)
Ans-(12,8)
=> Identify the missing number at the end of
the series. 3, 11, 19, 27, ?
A(33) B(35) C(37) D(39) E(41)
Ans-35
=> Identify the missing number at the end of
the series. 3, 6, 11, 18, ?
A(24) B(25) C(26) D(27) E(28)
Ans-27
=> Identify the missing number at the end of
the series. 516, 497, 478, 459, ?
A(436) B(440) C(438) D(452) E
(442)
Ans-
=>Identify the missing number at the end of
the series. 316, 323, 332, 343, ?
A(356) B(357) C(358) D(351) E
(359)
Ans-
=> Identify the missing number at the end of
the series. 662, 645, 624, 599, ?
A(587) B(566) C(589) D(575) E
(570)
Answer!
=>Identify the missing number within the
series. 33, ?, 19, 12, 5
A(31) B(26) C(29) D(27) E(24)
Answer!

=> Identify the missing number within the
series. 11, 19, ?, 41, 55
A(31) B(29) C(26) D(39) E(34)
Answer!
=>Identify the missing number within the
series. 98, 94, ?, 70, 38
A(89) B(85) C(86) D(87) E(88)
Answer!
=>Identify the missing number within the
series. 86, ?, 79, 75, 72, 68
A(82) B(80) C(85) D(84) E(83)
Answer!

=> Identify the missing number within the
series. 11, 19, ?, 41, 55
A(31) B(29) C(26) D(39) E(34)
Answer!
Identify the missing number within the
series. 98, 94, ?, 70, 38
A(89) B(85) C(86) D(87) E(88)
Answer!
Identify the missing number within the
series. 86, ?, 79, 75, 72, 68
A(82) B(80) C(85) D(84) E(83)
Answer!
Identify the missing number within the
series. 20, 30, 25, 35, ?, 40
A(45) B(35) C(25) D(30) E(50)
Answer!
At the zoo Raju saw 21 lions and tigers.
There were five more lions than tigers. How
many were tigers?
A (16) B (8)
C (13) D (7)
Answer!
If the sum of ages of 4 children born at the
intervals of 2 years each is 60 years then
what is the age of the oldest child?
A (12) B (20)
C (22) D (18)
Answer!
The age of A is three years more than B
which is twice as old as C. If the sum of the
ages of A, B and C is 33, then what is the
age of A ?
A (6) B (12)
C (15) D (18)
Answer!
Joy buys a painting for Rs.5200 and he
frame the painting by spending Rs.400. what
is the percent of gain if he sells the painting
for Rs.5900?
A (75/14) B (300/59)
C (175/13) D none of the above
Answer!
A shop man bought pencils at 6 for Rs.10. If
he wants to gain 20% profit, how many for a
rupee must he should sell?
A(2) B(5)
C(4) D(6)
Answer!
A cyclist crosses a 750 m long street in 6
minutes. What is his speed in km per hour?
A) 7 B) 7.5
C) 7.9 D) 8.2
Answer!
A train travels a certain distance at a speed
of 120 kmph in 6 hours. To cover the same
distance in 4 hours, it must travel at a
speed of:
A) 720kmph B) 480kmph
C) 180kmph D) 150kmph
Answer!
A person complete a journey in 15 hours
during which he travels first half of the
journey at the rate of 18 km/hr and second
half at the rate of 12 km/hr. Find the total
journey in km.
A) 216 B) 108
C) 150 D) 210
Answer!
The ratio between the speeds of two trains is
5 : 7. If the first train runs 600 km in 6
hours, then the speed of the second train is:
A) 100kmph B) 120kmph
C) 130kmph D) 140kmph
Answer!
If a train is running at the speed of 72 km/
hr and crosses a pole in 10 seconds what
will be the length of the train?
A)180 meters B) 200 meters
C)220 meters D) 210 meters
Answer!
What is the length of the bridge if a train
120 meters long and travelling at 36 km/hr
can cross it in 30 seconds
A) 120 meters B) 160 meters
C) 180 meters D) 300 meters
Answer!
If a train passes a station platform in 72
seconds and a man standing on the
platform in 24 seconds with a speed of 54
km/hr, find the length of the platform?
A) 360 meters B) 1080 meters
C) 720 meters D) none of the above
Answer!
If a train 250 m long passes a pole in 25
seconds then how long will it take to pass a
bridge of 450m long?
A) 45seconds B) 90 seconds
C) 700 seconds D) 70 seconds
Answer!
If a train 240 m long is running at a speed
of 45 km/hr then what time it will take to
pass a platform of 310 m long?
A) 44seconds B) 25 seconds
C) 36 seconds D) 46 seconds
Answer!
What will be the next number in the
following
8 10 18 44 124 (?)
(A) 344 (B) 366 (C) 354 (D) 356 (E) None
of these
Answer!
What will be the next number in the
following
13 25 61 121 205 (?)
(A) 323 (B) 326 (C) 324 (D) 313 (E) None
of these
Answer!
What will be the next number in the
following
656 352 200 124 86 (?)
(A) 67 (B) 59 (C) 62 (D) 57 (E) None of
these
Answer!
What will be the next number in the
following
454 472 445 463 436 (?)
(A) 436 (B) 456 (C) 454 (D) 434 (E) None
of these
Answer!
What will be the next number in the
following
12 18 36 102 360 (?)
(A) 1364 (B) 1386 (C) 1384 (D) 1376 (E)
None of these
Answer!
35% of 1500=75% of ?
a) 600 b) 650 c) 700 d) 750
Answer!
√7396 = ?
a) 74 b) 76 c) 84 d) 86
Answer!
74182 + 39286 = ? + 87501
a) 24976 b) 25867 c) 25967 d)
26067
Answer!
0.77 × 26 ÷ 11 ÷ 1.3 ?
a) 1.04 b)2.8 c)1.4 d) 14
Answer!
1232 ÷ (50×2.24) = ?
a) 111 b) 12 c) 11 d) 9
Answer!
999.009 + 99.99 + 9.90 + 0.099 + 9 + 99
= ?
a) 1216.998    b) 1316.998 c) 1217.098
d) 1326.998
Answer!
If 12% of a number is 84, what is the
number?
a) 600 b) 400 c) 700 d) 800
Answer
28x24 – 12/6 = ?
a) 56 b) 110 c) 100 d) 670
Answer
3965 + 4311 + 2782 + 53 = ?
a) 12111 b) 11112 c) 11111 d)
1111
Answer
what is the next term in the series 50, 48,
45, 41, ……………. ?
a) 37 b) 35 c) 36 d)34
Answer
10% of 10% of 1000 = ?
a) 1 b) 10 c) 100 d) 1000
Answer
In the series 2, 6, 18, 54, ...... what will be
the 8th term ?
A. 4370 B. 4374 C. 7443 D. 7434
Answer
3, 10, 101,___________________?
A. 10101 B. 10201 C. 10202 D. 11012
Answer
732456985, 32456985, 3245698, 245698,
______________?
Answer
123123 is always devisable by
a. 101 b. 1001 c. 303
d. 103
Answer!
FGI, GHJ, HIK, …………..
a. GKJ b. IJL c. JKL d.
FGK
Answer!
How many squares are there in a chess
board?
a. 64 b. 65 c. 204 d.
5212
Answer!
21, 441, 25, ……………
a. 50 b. 52 c. 625 d.
400
Answer!
By how much is two third of 57 more than
one third of 90?
a. 8 b. 38 c. 30 d. 28
Answer!
20% of 10+10% of 20= ……………………
a. 15 b. 4 c. 22 d. 20
Answer!
Which number is the smallest?
a. √2/3 b. √5/4 c.
√4/4 d. √5/6
Answer!
A number when divided by 8,9and 12 leaves
a reminder 3. The least such number is
a. 273 b. 363 c. 75 d.
183
Answer!
missing number within the
series. 20, 30, 25, 35, ?, 40
A(45) B(35) C(25) D(30) E(50)
Answer!
At the zoo Raju saw 21 lions and tigers.
There were five more lions than tigers. How
many were tigers?
A (16) B (8)
C (13) D (7)
Answer!
If the sum of ages of 4 children born at the
intervals of 2 years each is 60 years then
what is the age of the oldest child?
A (12) B (20)
C (22) D (18)
Answer!
The age of A is three years more than B
which is twice as old as C. If the sum of the
ages of A, B and C is 33, then what is the
age of A ?
A (6) B (12)
C (15) D (18)
Answer!
Joy buys a painting for Rs.5200 and he
frame the painting by spending Rs.400. what
is the percent of gain if he sells the painting
for Rs.5900?
A (75/14) B (300/59)
C (175/13) D none of the above
Answer!
A shop man bought pencils at 6 for Rs.10. If
he wants to gain 20% profit, how many for a
rupee must he should sell?
A(2) B(5)
C(4) D(6)
Answer!
A cyclist crosses a 750 m long street in 6
minutes. What is his speed in km per hour?
A) 7 B) 7.5
C) 7.9 D) 8.2
Answer!
A train travels a certain distance at a speed
of 120 kmph in 6 hours. To cover the same
distance in 4 hours, it must travel at a
speed of:
A) 720kmph B) 480kmph
C) 180kmph D) 150kmph
Answer!
A person complete a journey in 15 hours
during which he travels first half of the
journey at the rate of 18 km/hr and second
half at the rate of 12 km/hr. Find the total
journey in km.
A) 216 B) 108
C) 150 D) 210
Answer!
The ratio between the speeds of two trains is
5 : 7. If the first train runs 600 km in 6
hours, then the speed of the second train is:
A) 100kmph B) 120kmph
C) 130kmph D) 140kmph
Answer!
If a train is running at the speed of 72 km/
hr and crosses a pole in 10 seconds what
will be the length of the train?
A)180 meters B) 200 meters
C)220 meters D) 210 meters
Answer!
What is the length of the bridge if a train
120 meters long and travelling at 36 km/hr
can cross it in 30 seconds
A) 120 meters B) 160 meters
C) 180 meters D) 300 meters
Answer!
If a train passes a station platform in 72
seconds and a man standing on the
platform in 24 seconds with a speed of 54
km/hr, find the length of the platform?
A) 360 meters B) 1080 meters
C) 720 meters D) none of the above
Answer!
If a train 250 m long passes a pole in 25
seconds then how long will it take to pass a
bridge of 450m long?
A) 45seconds B) 90 seconds
C) 700 seconds D) 70 seconds
Answer!
If a train 240 m long is running at a speed
of 45 km/hr then what time it will take to
pass a platform of 310 m long?
A) 44seconds B) 25 seconds
C) 36 seconds D) 46 seconds
Answer!
What will be the next number in the
following
8 10 18 44 124 (?)
(A) 344 (B) 366 (C) 354 (D) 356 (E) None
of these
Answer!
What will be the next number in the
following
13 25 61 121 205 (?)
(A) 323 (B) 326 (C) 324 (D) 313 (E) None
of these
Answer!
What will be the next number in the
following
656 352 200 124 86 (?)
(A) 67 (B) 59 (C) 62 (D) 57 (E) None of
these
Answer!
What will be the next number in the
following
454 472 445 463 436 (?)
(A) 436 (B) 456 (C) 454 (D) 434 (E) None
of these
Answer!
What will be the next number in the
following
12 18 36 102 360 (?)
(A) 1364 (B) 1386 (C) 1384 (D) 1376 (E)
None of these
Answer!
35% of 1500=75% of ?
a) 600 b) 650 c) 700 d) 750
Answer!
√7396 = ?
a) 74 b) 76 c) 84 d) 86
Answer!
74182 + 39286 = ? + 87501
a) 24976 b) 25867 c) 25967 d)
26067
Answer!
0.77 × 26 ÷ 11 ÷ 1.3 ?
a) 1.04 b)2.8 c)1.4 d) 14
Answer!
1232 ÷ (50×2.24) = ?
a) 111 b) 12 c) 11 d) 9
Answer!
999.009 + 99.99 + 9.90 + 0.099 + 9 + 99
= ?
a) 1216.998    b) 1316.998 c) 1217.098
d) 1326.998
Answer!
If 12% of a number is 84, what is the
number?
a) 600 b) 400 c) 700 d) 800
Answer
28x24 – 12/6 = ?
a) 56 b) 110 c) 100 d) 670
Answer
3965 + 4311 + 2782 + 53 = ?
a) 12111 b) 11112 c) 11111 d)
1111
Answer
what is the next term in the series 50, 48,
45, 41, ……………. ?
a) 37 b) 35 c) 36 d)34
Answer
10% of 10% of 1000 = ?
a) 1 b) 10 c) 100 d) 1000
Answer
In the series 2, 6, 18, 54, ...... what will be
the 8th term ?
A. 4370 B. 4374 C. 7443 D. 7434
Answer
3, 10, 101,___________________?
A. 10101 B. 10201 C. 10202 D. 11012
Answer
732456985, 32456985, 3245698, 245698,
______________?
Answer
123123 is always devisable by
a. 101 b. 1001 c. 303
d. 103
Answer!
FGI, GHJ, HIK, …………..
a. GKJ b. IJL c. JKL d.
FGK
Answer!
How many squares are there in a chess
board?
a. 64 b. 65 c. 204 d.
5212
Answer!
21, 441, 25, ……………
a. 50 b. 52 c. 625 d.
400
Answer!
By how much is two third of 57 more than
one third of 90?
a. 8 b. 38 c. 30 d. 28
Answer!
20% of 10+10% of 20= ……………………
a. 15 b. 4 c. 22 d. 20
Answer!
Which number is the smallest?
a. √2/3 b. √5/4 c.
√4/4 d. √5/6
Answer!
A number when divided by 8,9and 12 leaves
a reminder 3. The least such number is
a. 273 b. 363 c. 75 d.
183
Answer!:

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