Number System A, B, C, D and E are consecutive even numbers respectively. The average of 5 numbers is 82. What is the product of C and E ? 6363 6383 6353 6373 6363 6383 6353 6373 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP x + x + 1 + x + 2 + x + 3 + x + 4 = 5 x 82= 5x + 10 = 410 = 5x = 400= x = 400/5 = 80 ∴ A = 80C = 82and E = 84= C x E = 82 x 84 = 6383
Number System A number when divided by 221 gives a remainder 43, what remainder will be obtained by dividing the same number 17? 5 10 9 11 5 10 9 11 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 221 + 43 = 264/17 = 9 (Remainder)
Number System The simplest form of 1.5 : 2.5 is : 17 : 19 13 : 11 3 : 5 5 : 7 17 : 19 13 : 11 3 : 5 5 : 7 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 3 : 5
Number System The cost of 87 pens and 29 pencils is `783. What is the cost of 90 pens and 30 pencils ? Rs. 810 Rs. 800 Rs. 830 Rs. 820 Rs. 810 Rs. 800 Rs. 830 Rs. 820 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the price of a pen be 'x' and that of pencil be 'y' Then 87x + 29y = 783Multiplying eqn (i) by 30/29 we get (87x) x 30/29 + (29y) 30/29 = 783 x 30/29∴ 90x + 30y = 810
Number System If one-seventh of a number is 55 then 40% of that number = ? 163 171 154 147 163 171 154 147 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the no. be x , Therefore, x/7 = 55Therefore, x = 55 x 7 = 385Therefore, 49% of 385 = 154
Number System Which one of the following is the sum of the numbers 1, 3, 5, 7, 9…. up to nth number? N(N + 1)/2 N2 N(N + 1) N2 + 1 N(N + 1)/2 N2 N(N + 1) N2 + 1 ANSWER DOWNLOAD EXAMIANS APP
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