Number System In an examination, 68% of the total examinees passed. If the number of failures is 248, the total number of examinees is 750 640 775 725 750 640 775 725 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Failed students are 32% which is 248.∴ Total = 24800/32 = 775
Number System The difference between 71% of a number and 46% and of the same number is 212. What is 75% of that number 724 673 845 636 724 673 845 636 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x.∴ 71% of x - 46% of x = 212∴ (71 - 46)% of x = 212∴ 25/100 x x = 212∴ x = 212 x 4 = 848∴ 75% of 848 = 848 x 75/100 = 636
Number System The difference between 45% of a number and 18% of the same number is 145.8. What is 30% of that number ? 141 162 245 188 141 162 245 188 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x.45% of x - 18% of x = 145.8∴ x/100 (45 - 18) = 145.8∴ x = 145.8 x 100/27 = 540∴ 30% of 540 = 540 x 30/100 = 162
Number System (1024—263—233)÷(986—764— 156) =? 6 8 None of these 10 6 8 None of these 10 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 8
Number System If (35)² is added to the square of a number the answer so obtained is 1394. What is the number ? 17 15 13 11 17 15 13 11 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 What is the difference between the local value of 7 and 5 in the number 2574? 403 413 430 570 403 413 430 570 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 500 – 70 = 430
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