Number System In how many different ways can the letters of the word 'FRUGAL'be arranged ? 660 720 515 556 660 720 515 556 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP In FRUGAL there ae six difference letters Therefore, 6 ! = 6 x 5 x 4 x 3 x 2 x 1 = 720
Number System If the sum and difference of two numbers are 20 and 8 respectively, then the difference of their square is: 28 180 160 12 28 180 160 12 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the numbers be x and y. Then, x + y = 20 and x - y = 8x2 - y2 = (x + y)(x - y) = 20 * 8 = 160.
Number System Two numbers have a H.C.F of 16 and a product of two numbers is 2560. Find the L.C.M of the two numbers? 170 150 140 160 170 150 140 160 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP L.C.M of two numbers is given by(Product of the two numbers) / (H.C.F of the two numbers) = 2560/16 = 160.
Number System Which one of the following represents the sum of the first n even numbers? N(N + 1) N(N – 1) N2 N2+ 1 N(N + 1) N(N – 1) N2 N2+ 1 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP N (N + 1)
Number System Find the nearest to 25268 which is exactly divisible by 467? 25228 25208 25218 25308 25228 25208 25218 25308 ANSWER DOWNLOAD EXAMIANS APP
Number System 486+32×25—59=? 528 596 582 567 528 596 582 567 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 528
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