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Number System

Number System
16.23 x 12.9 + 17.32 = ?

246.687
236.687
None of these
226.687

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

? = 16.23 x 12.9 + 17.32= 209.367 + 17.32= 226.687

Number System
(4.6 x 2.8 x 5.5) - (3.2 x 4.5 x 2.8) = ?

28.56
27.54
30.52
29.81

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

? = (4.6 x 2.8 x 5.5) - (3.2 x 4.5 x 2.8)   = 70.84 - 40.32   = 30.52

Number System
Find the greatest four digit number which leaves respective remainders of 2 and 5 when divided by 15 and 24.

None of these
9565
9974
9125

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Since the difference between the divisors and the respective remainders is not constant, back substitution is the convenient method. None of the given numbers is satisfying the condition.

Number System
Three numbers which are co-prime to one another are such that the product of the first two 551 and that of the last two is 1073. The sum of the three numbers is

93
110
85
74

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

85

Number System
The product of two consecutive odd numbers is 4095 What is the greater number ?

65
69
74
61

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Let the two consecutive odd numbers be 2x - 1 and 2x + 1.(2x - 1) (2x - 1) = 4095= 4x² - 1 = 4095= 4x² = 4096= x² = 1024∴ x = 32∴ The numbers are 63 and 65.Greater number = 65

Number System
Three seventh of a number is 12 more than 40% of that number. What will be the 60% of that number?

148
126
210
248

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

3/7 x – 40/100 x = 12x = 35 * 1235 * 12 * 60/100 = 252/2 = 126

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