Number System If a number is multiplied by. three-fourth of itself, the value thus obtained is 10800. What is that number ? 180 260 120 60 180 260 120 60 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x.∴ x x 3x/4 = 10800= x² = 10800 x 4/3 = 14400∴ x = √14400 = 120
Number System The sum of three consecutive numbers is 87. The greatest among these three number is: 28 29 26 30 28 29 26 30 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the numbers be x, x + 1 and x + 2 Then,x + (x + 1) + (x + 2) = 873x = 84x = 28Greatest number, (x + 2) = 30.
Number System In how many different ways can the letters of the word TEST' be arranged ? 8 10 16 12 8 10 16 12 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 How many figures are required for numbering the pages of a book containing 1000 pages? 6489 2893 2883 3892 6489 2893 2883 3892 ANSWER DOWNLOAD EXAMIANS APP
Number System If A = 1, B = 3, C = 5 and so on, what do the numbers 3, 9, 7 stand for CAR CAT BED BAT CAR CAT BED BAT ANSWER EXPLANATION DOWNLOAD EXAMIANS APP BED
Number System Find the smallest number which should be multiplied with 520 to make it a perfect square. 120 None of these 30 55 120 None of these 30 55 ANSWER DOWNLOAD EXAMIANS APP
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