56, 72, 90, 110, 132, 150
Question: 56, 72, 90, 110, 132, 150
[A].
72
110
132
150
[A].
[B].
[C].
[D].
Answer: Option D
Explanation:
The numbers are 7 x 8, 8 x 9, 9 x 10, 10 x 11, 11 x 12, 12 x 13.
So, 150 is wrong.
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(256)0.16 x (256)0.09 = ?
Question:
(256)0.16 x (256)0.09 = ?
[A].4 [B].
16 [C].
64 [D].
256.25 Answer: Option A
Explanation:
(256)0.16 x (256)0.09 = (256)(0.16 + 0.09)
= (256)0.25
= (256)(25/100)
= (256)(1/4)
= (44)(1/4)
= 44(1/4)
= 41
= 4
What is the sum of two consecutive even numbers, the difference of whose squares is 84?
Question:
What is the sum of two consecutive even numbers, the difference of whose squares is 84?
[A].34 [B].
38 [C].
42 [D].
46 Answer: Option C
Explanation:
Let the numbers be x and x + 2.
Then, (x + 2)2 – x2 = 84
4x + 4 = 84
4x = 80
x = 20.
The required sum = x + (x + 2) = 2x + 2 = 42.
41, 43, 47, 53, 61, 71, 73, 81
Question:
41, 43, 47, 53, 61, 71, 73, 81
[A].61 [B].
71 [C].
73 [D].
81 Answer: Option D
Explanation:
Each of the numbers except 81 is a prime number.
A number when divided by 296 leaves 75 as remainder. When the same number is divided by 37, the remainder will be:
Question: A number when divided by 296 leaves 75 as remainder. When the same number is divided by 37, the remainder will be:
[A].1 [B].
2 [C].
8 [D].
11 Answer: Option A
Explanation:
Let x = 296q + 75
= (37 x 8q + 37 x 2) + 1
= 37 (8q + 2) + 1
Thus, when the number is divided by 37, the remainder is 1.
Simple interest on a certain sum of money for 3 years at 8% per annum is half the compound interest on Rs. 4000 for 2 years at 10% per annum. The sum placed on simple interest is:_______?
Simple interest on a certain sum of money for 3 years at 8% per annum is half the compound interest on Rs. 4000 for 2 years at 10% per annum. The sum placed on simple interest is:_______?A. Rs. 1550
B. Rs. 1650
C. Rs. 1750
D. Rs. 2000The price of 10 chairs is equal to that of 4 tables. The price of 15 chairs and 2 tables together is Rs. 4000. The total price of 12 chairs and 3 tables is:
Question:
The price of 10 chairs is equal to that of 4 tables. The price of 15 chairs and 2 tables together is Rs. 4000. The total price of 12 chairs and 3 tables is:
[A].Rs. 3500 [B].
Rs. 3750 [C].
Rs. 3840 [D].
Rs. 3900 Answer: Option D
Explanation:
Let the cost of a chair and that of a table be Rs. x and Rs. y respectively.
Then, 10x = 4y or y = 5 x. 2 15x + 2y = 4000
15x + 2 x 5 x = 4000 2 20x = 4000
x = 200.
So, y = 5 x 200 = 500. 2 Hence, the cost of 12 chairs and 3 tables = 12x + 3y
= Rs. (2400 + 1500)
= Rs. 3900.