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Number System

Number System
Two third of three- fifth of one fourth of a number is 24, what is 30% of that number?

90
72
69
42

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

x * 2/3 * 3/5 * 1/4 = 24x = 240240 * 30/100 = 72

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 ?

145214
145314
145714
145914

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

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

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?

5
8
2
3

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
The square root of 3 + “5 is :

“3 /2 + 1/”2
“(5/2) + “(1/2)
“3 /2 - 1/”2
“5 /2 - 1/”2

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

“(5/2) + “(1/2)

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

CAT
BED
CAR
BAT

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

BED

Number System
Find the least value of 3x + 4y if x2y3 = 6.

6
3
10
7

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

10

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