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Number System

Number System
The Twenty-First Century will start on January 1 in the year

2101
2000
2100
2001

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

2001

Number System
1827÷ 36 x ?=162.4

3.2
2.6
4.3
1.9

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

3.2

Number System
Which number should replace question mark (?) in the following equation ? ?/342 = 38/?

118
116
112
114

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

(?)² = 342 x 38Therefore, ? = √342 x 38 = √38 x 9 x 38 = 38 x 3 = 114

Number System
If a number is multiplied by. three-fourth of itself, the value thus obtained is 10800. What is that number ?

260
180
120
60

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Let the number be x.∴ x x 3x/4 = 10800= x² = 10800 x 4/3 = 14400∴ x = √14400 = 120

Number System
The sum of the digits of a two digit number is 12. If the new number formed by reversing the digits is greater than the original number by 54, then what will be the original number?

39
49
59
69

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

39

Number System
What is the least number that should be added to 5200 to make it a perfect square ?

225
288
275
129

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

We sec (73)² = 5329 and (72)² = 5184ie 5329 > 5200 > 5184So 129 should be added to make is perfect square.

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