Number System How many numbers up to 100 are divisible by 7? 107 14 100 93 107 14 100 93 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 100/7 = 14 2/7 => 14 Numbers
Number System If the difference between a number and its three-fourth is 18, find the number. 61 72 68 57 61 72 68 57 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x.According to the question,x - 3x/4 = 18= x/4 = 18= x = 4 x 18 = 72
Number System If a number is subtracted from its square we get 272. Find the number? 24 14 22 17 24 14 22 17 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP x2 – x = 272 => x =17
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 11 13 17 15 11 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 In how many different ways can the letters of the word 'DETERMINE' be arranged ? 61480 60480 62480 63480 61480 60480 62480 63480 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP No. of arrangements = 9! / 3! Because, E comes 3 times = 60480
Number System The difference between 71% of a number and 46% and of the same number is 212. What is 75% of that number 724 845 636 673 724 845 636 673 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
EXAMIANS