Number System In how many different ways can the letters of the word TEST' be arranged ? 10 12 16 8 10 12 16 8 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 A certain number of two digits is three times the sum of its digits. If 45 be added to it, the digits are reversed. The number is: 22 24 27 30 22 24 27 30 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 27
Number System 56.21 +2.36+5.41 —21.4+1.5=? 34.08 44.08 64.08 54.08 34.08 44.08 64.08 54.08 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 44.08
Number System What value should come in place of ? in the given number series ? 15, 51, 162, 498, 1509, ? 3434 7878 5656 4545 3434 7878 5656 4545 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 15, (15 + 2) x 3 = 51,(51 + 3) x 3 = 162, (162 + 4) x 3 = 498, (498 + 5) x 3 = 1509(1509 + 6) x 3 = 4545
Number System If a number is multiplied by. three-fourth of itself, the value thus obtained is 10800. What is that number ? 260 180 120 60 260 180 120 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 64% of 2650+40% 0f 320=? 1824 2096 1247 1578 1824 2096 1247 1578 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 1824
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