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Number System

Number System
How many numbers up to 100 are divisible by 7?

93
100
107
14

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

100/7 = 14 2/7 => 14 Numbers

Number System
How many numbers up to 300 and 700 are divisible by 2, 3 and 7 both together?

8
11
9
10

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

(700 – 300)/42 = 9 22/42 => 9 Numbers

Number System
If HKUJ means FISH, what does UVCD mean ?

STAR
STAK
STAB
STAM

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

STAB

Number System
65 x 288 ÷ 52 = 1.8 x ?

190
210
180
200

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

? = 65x288/52x1.8 = 200

Number System
The difference between a two-digit number and the number obtained by interchanging the digits is 36. What is the difference of the two digits of the number ?

2
4
3
1

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

(10x + y) - (10y + x) = 36,9(x - y) = 36/9 = 4

Number System
The sum and the product of two numbers are 25 and 144 respectively, the difference of the number is?

7
11
5
3

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

x + y = 25xy = 144(x- y)2 = (x + y)2 – 4xy(x- y)2 = 625 – 576 => (x – y) = 7

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