Number System Find the average of the following set of scores 450, 1050, 12, 390, 143, 286, 550, 999 495 490 480 485 495 490 480 485 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Required average score = (450 + 1050 + 12 + 390 + 143 + 286 + 550 + 999) / 8 = 3880 / 8 = 485
Number System The sum of 8 consecutive odd numbers is 656. Also average of four consecutive even numbers is 87. What is the sum of the smallest odd number and second largest even number ? 163 160 167 158 163 160 167 158 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Average of 8 consecutive odd numbers = 656/8 = 82∴ Fourth number = 82 - 1 = 81∴ First numbers = 75Average of 4 even numbers = 87∴ Second even number = 87 - 1 = 86Second largest even number = 88∴ Required sum = 75 + 88 = 163
Number System (12.11)2 + (?)2 = 732.2921 20.2 17.2 14.2 24.2 20.2 17.2 14.2 24.2 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 24.2
Number System 6.4 x 8.5 x 25/3.2 x 12.5 = ? 3.4 5.6 2.3 4.5 3.4 5.6 2.3 4.5 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP ? = 6.4 x 8.5 x 2.5/3.2 x 12.5 = 3.4
Number System [(18.6 x 4.5) + (7.8 ÷ 0.24)] ÷ 3.2 = ? 26.3125 36.3125 46.3125 25.3125 26.3125 36.3125 46.3125 25.3125 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP ? = 83.7 + 32.5/3.2 = 116.2/3.2 = 36.3125
Number System If (47)² is added to the square of a number the answer thus obtained is 2290. What is the number ? 7 8 10 9 7 8 10 9 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the no. be x Therefore, x² + (47)² = 2290Therefore, x² = 2290 - 2209 = 81Therefore, x = 9
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