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Number System

Number System
In a division sum, the divisor is 10 times the quotient and 5 times the remainder. If the remainder is 46, the dividend is:

5336
9865
2568
6890

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

5336

Number System
Supply the missing figure : 3, 11, 8, 16, 13 .... 18

12
28
21
18

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

21

Number System
Which one of the following is the sum of the numbers 1, 3, 5, 7, 9…. up to nth number?

N2 + 1
N(N + 1)/2
N(N + 1)
N2

ANSWER DOWNLOAD EXAMIANS APP

Number System
If A + B = 30 and AB = 94, What is the value of A² + B² ?

920
625
824
712

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

(A + B)² = (30)² = 900A² + B² + 2AB = 900Therefore, A² + B² = 900 - 2 x 94                                = 900 - 188 = 712

Number System
What should be the least number to be added to the 51234 number to make it divisible by 9?

5
4
6
3

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

The least number to be added to the numbers to make them divisible by 9 is equal to the difference of the least multiple of 9 greater than the sum of the digits and sum of the digits.Sum of digits = 15.Nearest multiple of 9 greater than sum of digits = 18.Hence 3 has to be added.

Number System
In how many different ways can the letters of the word TEST' be arranged ?

12
10
8
16

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

The word TEST consists of 4 letters in which T comes twice ∴ Number of arrangements= 4!/2! = 4 x 3 x 2 x 1/2 x 1 = 12

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