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Number System

Number System
If (17)3 is subtracted from the square of a number, the answer so obtained is 2143. What is the number ?

82
83
84
81

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

x² - (17*17*17)  = 2143or x² = 2143 + 4913 = 7056∴ x = 84

Number System
17580 x 1.8 - 13720 x 2.1 = ? x 2.4

1180
1160
1140
1120

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

2.4 x ? = 31644 - 28812 = 2832∴ ? = 2832/2.4= 1180

Number System
If three eighth of a number is 141. What will be the approximately value of 32.08% of this number?

120
160
60
90

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

x * 3/8 = 141 => x= 376376 * 32.08/100 = 120

Number System
On converting the following base-2 numeral in base ten, 1101101, we get

107
108
106
109

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

109

Number System
The average of 7 consecutive even numbers A, B, C, D, E, F and G is 36. What is the product of ' C and 'E' ?

1468
1292
1327
1168

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

A + B + C + D + E + F + G/7 = 36Therefore, D = 36Therefore, C = 34,                             E = 38Therefore, Product = 34 x 38 = 1292

Number System
What should be the least number to be added to the 51234 number to make it divisible by 9?

3
4
6
5

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

The least number to be added to the numbers to make them divisible by 9 is equal to the difference of the least multiple of 9 greater than the sum of the digits and sum of the digits.Sum of digits = 15.Nearest multiple of 9 greater than sum of digits = 18.Hence 3 has to be added.

MORE MCQ ON Number System

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