Number System The sum of three consecutive numbers is 87. The greatest among these three number is: 29 28 30 26 29 28 30 26 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the numbers be x, x + 1 and x + 2 Then,x + (x + 1) + (x + 2) = 873x = 84x = 28Greatest number, (x + 2) = 30.
Number System 6.4 x 8.5 x 25/3.2 x 12.5 = ? 4.5 3.4 2.3 5.6 4.5 3.4 2.3 5.6 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP ? = 6.4 x 8.5 x 2.5/3.2 x 12.5 = 3.4
Number System Which one of the following represents the sum of the first n even numbers? N2+ 1 N(N – 1) N2 N(N + 1) N2+ 1 N(N – 1) N2 N(N + 1) ANSWER EXPLANATION DOWNLOAD EXAMIANS APP N (N + 1)
Number System What is the difference between the local value of 7 and 5 in the number 2574? 413 430 403 570 413 430 403 570 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 500 – 70 = 430
Number System If (72)² is subtracted from the square of a number, the answer thus obtained is 4617. What is the number ? 99 95 103 92 99 95 103 92 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP x² - (72)² = 467Therefore, x² = 4617 + 5184Therefore, x² = 9801 Therefore, x = 99
Number System 7432 ÷ 32 x ? = 2787 12 21 78 41 12 21 78 41 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 7432/32 x ? = 2787= ? = 2787 x 32/7432 = 12
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