Number System In how many different ways can the letters of the word TEST' be arranged ? 12 8 16 10 12 8 16 10 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP The word TEST consists of 4 letters in which T comes twice ∴ Number of arrangements= 4!/2! = 4 x 3 x 2 x 1/2 x 1 = 12
Number System 65% of 320+?=686 478 479 480 481 478 479 480 481 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 65% of 320+?=686 208+?=686?=686-208?=478
Number System The sum of a number and its reciprocal is one-eighth of 34. What is the product of the number and its square root? 32 27 8 None of these 32 27 8 None of these ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x. Then,x + 1/x = 34/8 8x2 - 34x + 8 = 0 4x2 - 17x + 4 = 0 (4x - 1)(x - 4) = 0 x = 4required number = 4 * √4 = 4 * 2 = 8.
Number System Find the smallest number which should be multiplied with 520 to make it a perfect square. 30 120 None of these 55 30 120 None of these 55 ANSWER DOWNLOAD EXAMIANS APP
Number System Three times the first of three consecutive odd integers is 3 more than twice the third. The third integer is: 15 9 11 13 15 9 11 13 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the three integers be x, x + 2 and x+ 4.Then,3x = 2(x + 4) + 3x = 11Third integer = x + 4 = 15.
Number System In a fraction, twice the numerator is two more than the denominator. If 3 is added to the numerator and the denominator each, then the resultant fraction will be 2/3 .What was the original fraction 17/12 11/12 7/12 19/12 17/12 11/12 7/12 19/12 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 7/12
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