Number System If (72)² is subtracted from the square of a number, the answer thus obtained is 4617. What is the number ? 95 103 99 92 95 103 99 92 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP x² - (72)² = 467Therefore, x² = 4617 + 5184Therefore, x² = 9801 Therefore, x = 99
Number System 56.21 +2.36+5.41 —21.4+1.5=? 34.08 54.08 64.08 44.08 34.08 54.08 64.08 44.08 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 44.08
Number System Find the greatest four digit number which leaves respective remainders of 2 and 5 when divided by 15 and 24. 9974 None of these 9125 9565 9974 None of these 9125 9565 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 If the numberator of a fraction is increased by 50% and denominator by 20% the fraction become 9/15. What was the original fraction ? 3/5 13/25 6/7 12/25 3/5 13/25 6/7 12/25 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the fraction be x/yWe have 150x/120y = 9/15= x/y = 12/25
Number System What is the value of ? in the following equations ? 72/? = ?/50 40 60 100 80 40 60 100 80 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP (?)² = 72 x 50= (6 x 6 x 2) x (5 x 5 x 2)= (6 x 5 x 2)² = (60)²∴ ? = 60
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