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Number System

Number System
What is 432 times 119 ?

52408
50408
51408
53408

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

No. 432 x 119 = 51408

Number System
The difference between the two digit number and the number obtained by interchanging its digits is 54. The difference between the digits is?

1
4
6
Nothing can be said.

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

(10x + y) – (10y + x) = 54x – y = 6

Number System
What is the least number, which is perfect square but contains 2700 as its factor?

5400
2700
1800
10800

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

900 * 3 * 3 = 8100

Number System
(800 / 64) * (1296 / 36) = ?

None of these
420
460
500

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Given Exp.= 800/64 * 1296/36 = 12.5 * 36 = 450

Number System
If the sum and difference of two numbers are 20 and 8 respectively, then the difference of their square is:

12
160
28
180

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Let the numbers be x and y. Then, x + y = 20 and x - y = 8x2 - y2 = (x + y)(x - y) = 20 * 8 = 160.

Number System
The population of a town increases by 15% in the first year and decreases by 25% in the second year. If its current population is 168480 then what will be its population after two years ?

145314
145214
145914
145714

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Population of the town= 168480 x 115/100 x 75/100= 145314

MORE MCQ ON Number System

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