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Number System

Number System
A certain number when divided by 45 leaves a remainder 31, what is the remainder if the same number be divided by 15?

9
1
13
11

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

45 + 31 = 76/15 = 1 (Remainder)

Number System
The product of two consecutive odd numbers is 6723. Find is the greater number.

83
80
77
85

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Let the first odd number be x.Then, the other odd number would be x + 2.∴ x(x+2) = 6723= x2 + 2x = 6723= x2 + 2x = 6723= x2 + 2x - 6723 = 0= x2 + 83 - 81 x - 6723 = 0= x(x+83) - 81 (x + 83) = 0= (x + 83) (x - 81) = 0= (x + 83) (x - 81) = 0= x - 81 = 0∴ x = 81Hence, greater number = x + 2 = 81 + 2 = 83

Number System
If one-seventh of a number is 55 then 40% of that number = ?

154
147
163
171

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Let the no. be x ,             Therefore, x/7 = 55Therefore, x = 55 x 7 = 385Therefore, 49% of 385 = 154

Number System
On dividing number by 5, we get 3 as remainder. What will be the remainder when the square of this number is divided by 5?

1
4
2
0

ANSWER DOWNLOAD EXAMIANS APP

Number System
What is the sum of all even numbers from 1 to 701?

122550
122850
123850
122500

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

700/2 = 350350 * 351 = 122850

Number System
Find the smallest number which should be multiplied with 520 to make it a perfect square.

None of these
120
30
55

ANSWER DOWNLOAD EXAMIANS APP
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