Number System The difference between 71% of a number and 46% and of the same number is 212. What is 75% of that number 845 636 673 724 845 636 673 724 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 What is the least number, which is perfect square but contains 2700 as its factor? 2700 10800 1800 5400 2700 10800 1800 5400 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 900 * 3 * 3 = 8100
Number System If (47)² is added to the square of a number the answer thus obtained is 2290. What is the number ? 8 9 7 10 8 9 7 10 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the no. be x Therefore, x² + (47)² = 2290Therefore, x² = 2290 - 2209 = 81Therefore, x = 9
Number System In how many different ways can the letters of the word 'DETERMINE' be arranged ? 62480 60480 61480 63480 62480 60480 61480 63480 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP No. of arrangements = 9! / 3! Because, E comes 3 times = 60480
Number System Supply the missing figure : 3, 11, 8, 16, 13 .... 18 28 18 12 21 28 18 12 21 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 21
Number System What number should come in the place of (?) in the following number series ? 1, 4, 9, 25, 49, ?, 169, 289, 361 121 11 321 225 121 11 321 225 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP The series is (Prime No.)²So it is (11)² = 121
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