Number System In how many different ways can the letters of word "SENTENCE" be arranged ? 3260 2360 6460 3360 3260 2360 6460 3360 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Number of ways = 8!/3! 2! = 40320/12 = 3360
Number System What should come in the place of question mark (?) in the number series given below? 159 160 157 158 159 160 157 158 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 160
Number System Two third of three- fifth of one fourth of a number is 24, what is 30% of that number? 90 69 42 72 90 69 42 72 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP x * 2/3 * 3/5 * 1/4 = 24x = 240240 * 30/100 = 72
Number System Which one of the following is the sum of the numbers 1, 3, 5, 7, 9…. up to nth number? N2 N2 + 1 N(N + 1) N(N + 1)/2 N2 N2 + 1 N(N + 1) N(N + 1)/2 ANSWER DOWNLOAD EXAMIANS APP
Number System If (17)3 is subtracted from the square of a number, the answer so obtained is 2143. What is the number ? 84 83 81 82 84 83 81 82 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP x² - (17*17*17) = 2143or x² = 2143 + 4913 = 7056∴ x = 84
Number System ind the number, difference between number and its 3/5 is 50 124 125 120 123 124 125 120 123 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number = x,Then, x-(3/5)x = 50,=> (2/5)x = 50 => 2x = 50*5,=> x = 125
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