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Number System

Number System
Supply the missing figure : 1, 4, 9, 16, 25 .... 49

36
16
23
42

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

36

Number System
In a two-digit number, the digit in unit's place is two more than three times the digit in ten's place. If the sum of the two digits is 10, what is the number ?

28
18
22
24

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Let the number be 10x + y.∴ y = 3x + 2 .......(i)And, x + y = 10 ......(ii)From (i) and (ii), x = 2, y = 8∴ Number = 28

Number System
A laborer is engaged for 30 days on the condition that he receives Rs.25 for each day he works and is fined Rs.7.50 for each day is absent. He gets Rs.425 in all. For how many days was he absent?

6
9
8
10

ANSWER DOWNLOAD EXAMIANS APP

Number System
If A = 1, B = 3, C = 5 and so on, what do the numbers 3, 9, 7 stand for

CAT
BAT
CAR
BED

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

BED

Number System
In each of the following numbers, what should be the missing digit in the indicated place such that the number is a multiple of 11?

2
5
3
8

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Divisibility of 11: If the difference of the sum of the digits at odd places and the sum of the digits at even places of a number is zero or a multiple of 11, then that number is divisible by 11.As per divisibility rule of 11, difference = (x + 21) - 18 = x + 3=> x + 3 = 11 => x = 8

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?

13
11
1
9

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

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

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