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Number System

Number System
In a division sum, the quotient is 120, the divisor 456 and the remainder 333, find the dividend?

50553
55053
5553
56053

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

120 * 456 + 333 = 55053

Number System
What is the greater of the two numbers whose product is 2560, given that the sum of the two numbers exceeds their difference by 64?

None of these
100
110
90

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Let the greater and the smaller number be g and s respectively.gs = 2560g + s exceeds g - s by 64 i.e., g + s - (g - s) = 64i.e., 2s = 64 => s = 32.g = 2560/s = 80.

Number System
If a + b = 16 and ab = 68, what is the value of a² + b² ?

116
112
124
120

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

a + b = 16 Therefore, (a+b)² = (16)² = 256                    a² + b² + 2ab = 256Therefore,        a² + b² = 256 - 2 x 68Therefore, a² + b² = 256 - 136 = 120

Number System
In how many different ways can the letters of word 'BIOLOGY' be arranged ?

2410
2520
2678
2367

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

In BIOLOGY total 7 letters are there but O comes twice.∴ Number of arrangements = 7!/2! = 2520

Number System
Find the least number with which 16200 should be multiplied, to make it a perfect cube.

36
45
48
360

ANSWER DOWNLOAD EXAMIANS APP

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

72
69
90
42

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

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

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