Number System Which one of the following is the sum of the numbers 1, 3, 5, 7, 9…. up to nth number? N(N + 1)/2 N(N + 1) N2 N2 + 1 N(N + 1)/2 N(N + 1) N2 N2 + 1 ANSWER DOWNLOAD EXAMIANS APP
Number System 2536+4851—?=3450+313 4567 5243 6784 3624 4567 5243 6784 3624 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 3624
Number System 9 3/4 + 7 2/17 - 9 1/15 = ? 7 817/1020 9 817/1020 9 719/1020 7 719/1020 7 817/1020 9 817/1020 9 719/1020 7 719/1020 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Given sum = 9 + 3/4 + 7 + 2/17 - (9 + 1/15)= (9 + 7 - 9) + (3/4 + 2/17 - 1/15)= 7 + (765 + 120 - 68)/1020 = 7 817/1020
Number System If (72)² is subtracted from the square of a number, the answer thus obtained is 4617. What is the number ? 103 95 92 99 103 95 92 99 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP x² - (72)² = 467Therefore, x² = 4617 + 5184Therefore, x² = 9801 Therefore, x = 99
Number System If the difference between a number and two-fifths of that number is 45 what is the number ? 75 78 76 77 75 78 76 77 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x ∴ x - 2x/5 = 45∴ x = 75
Number System What is 432 times 119 ? 51408 50408 53408 52408 51408 50408 53408 52408 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP No. 432 x 119 = 51408
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