Number System If the difference between a number and its three fifths is 62, what is the number ? 155 145 165 175 155 145 165 175 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x.∴ x - 3x/5 = 62or x = 62 x 5/2 = 155
Number System If (35)² is added to the square of a number the answer so obtained is 1394. What is the number ? 11 17 15 13 11 17 15 13 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x Therefore, x² + (35)² = 1394Therefore, x² = 1394 - (35)² = 1394 - 1225 = 169Therefore, x = √169 = 13
Number System Let R = qs—4. When s=8, R=16. When s=10, R is equal to 23 20 21 22 23 20 21 22 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 21
Number System A, B, C, D and E are consecutive even numbers respectively. The average of 5 numbers is 82. What is the product of C and E ? 6373 6353 6383 6363 6373 6353 6383 6363 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP x + x + 1 + x + 2 + x + 3 + x + 4 = 5 x 82= 5x + 10 = 410 = 5x = 400= x = 400/5 = 80 ∴ A = 80C = 82and E = 84= C x E = 82 x 84 = 6383
Number System The difference between 8% of a number and 3% of the same number is 39. What is 2.8% of that number ? 27.84 24.84 25.84 21.84 27.84 24.84 25.84 21.84 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x.∴ x(8 - 3)% = 39x = 3900/5 = 780∴ 2.8% of 780= 780 x 2.8/100 = 21.84
Number System 2536+4851—?=3450+313 5243 6784 4567 3624 5243 6784 4567 3624 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 3624
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