Number System Which one of the following is the sum of the numbers 1, 3, 5, 7, 9…. up to nth number? N2 N(N + 1)/2 N2 + 1 N(N + 1) N2 N(N + 1)/2 N2 + 1 N(N + 1) ANSWER DOWNLOAD EXAMIANS APP
Number System (2560 x 1.4) +(7400 x 0.6) =? 9160 8024 7234 6543 9160 8024 7234 6543 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 8024
Number System What should come in the place of question mark (?) in the number series given below? 159 158 157 160 159 158 157 160 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 160
Number System If the sum of 4 consecutive odd numbers is 104, what will be the third number if they are arranged in ascending order ? 27 29 30 28 27 29 30 28 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the consecutive odd number be x, x + 2, x + 4 and x + 6 respectively.According to the question x + x + 2 + x + 4 + x + 6 = 104 = 4x + 12 = 104 = 4x = 104 - 12 = 92∴ x = 92/4 = 23∴ Required number = x + 4= 23 + 4 = 27
Number System Two numbers are in the ratio 3:5. If 9 be subtracted from each, they are in the ratio of 9:17. The first number is: 36 18 30 27 36 18 30 27 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP (3x-9):(5x-9) = 9:17 x = 12 => 3x = 36
Number System 7589 - ? = 3434 4155 4242 1123 11023 4155 4242 1123 11023 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let 7589 - x = 3434Then x = 7589 - 3434 = 4155
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