- 3:9
- 9:21
- 6:10
- 18:49
- b
-
9:21
3:7 (Divided by 03)
Mathematics MCQs
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The number of boys in a class is three times the number of girls. Which one of the following numbers cannot represent the total number of children in the class?
- 40
- 42
- 44
- 45
- b
By converting 142.5% into decimal, answer will be:
- 0.1425
- 0.1425
- 1.425
- 14.25
- c
-
142.5%
1425/10 * 1/100
1425/1000
1.425
Average age of A and B is 30 Years, that of B and C is 32 Years and the average age of C and A is 34 Years. The age of C is:
- 36
- 38
- 40
- 42
- a
-
Average of A & B is
( A+B) /2 = 30 ⇒ A+B=60 ⇒ A= 60 – B —- (i)
( B+C)/2 = 64 ⇒B+C = 64 ⇒ B= 64 – C—- ( ii )
Putting value of B in equation ( i )
⇒ A= 60 – 64 +C ⇒ A = -4 + C —– ( iii)
( C+A)/2 = 34 ⇒ C+A=68 ⇒ C = 68 – A —–(iv)
Puuting value of A from eaquation ( iii) to eq. (iv)
⇒ C= 68 +4 -C ⇒ C =36
3 Boxes have some average weight. When one box which weights 89 kg is replaced by another box, the average weight increased by 5 kg, How much the new box weighs?
- 104 Kg
- 94 Kg
- 109 Kg
- 50 Kg
- a
Solve : 8 / 0.2 =?
- 25
- 30
- 35
- 40
- d
-
8/0.2
8*10/2
8*5
10
Largest perfect square between 4 an 50 is:
- 35
- 40
- 45
- 49
- d
-
25=52
36=62
45=No Square
49=72
A man buys an article for Rs.27.50 and sells it for Rs.28.60. Find his gain percent?
- 1%
- 4%
- 3%
- 5%
- b
-
Purchase = 27.50
Sale = 28.60
Profit = 28.60-27.50=1.1
Profit %age = 1.1/27.50*100
Profit %age = 4
Decimal Form of 5.3% is:
- 0.053
- 0.53
- 53
- 0.0053
- a
-
5.3%
53/10*1/00
53/1000
0.053
If 2:7::X:49 Find the value of X?
- 14
- 15
- 16
- 17
- a
-
2:7 :: X:49
7*X = 2*49
7X=98
x=98/7
X=14