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Number System

Number System
The difference between a number and its three-fifth is 50. What is the number?

75
None of these
100
125

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

x - 3/5 x = 50 => 2/5 x = 50x = (50 * 5)/2 = 125.

Number System
In how many ways can 5 boys be chosen from 6 boys and 4 girls so as to include exactly one girl ?

54
56
58
60

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

One girl can be chosen in 4C1 = 4 ways and 4 boys can be chosen in 6C4 = 15 ways ∴ Total number of ways = 4 x 15 = 60 ways.

Number System
What should come in the place of question mark (?) in the number series given below?

157
159
160
158

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

160

Number System
The sum of the squares of three numbers is 138, while the sum of their products taken two at a time is 131. Their sum is:

30
None of these
40
20

ANSWER DOWNLOAD EXAMIANS APP

Number System
1051.64 - 159.42 - 96.84 + 162.37 - 940.26 + 504 = ?

521.49
501.49
491.49
511.49

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

? = 1718.01 - 1196.52 = 521.49

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

BAT
BED
CAT
CAR

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

BED

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