Number System Supply the missing figure : 2, 6, 12, 20, 30 ... 56 42 41 39 40 42 41 39 40 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 42
Number System The average age of seven boys sitting in a row facing North is 26 years. If the average age of first three boys is 19 years and the average age of last three boys is 32 years, what is the age of the b 30 years 29 years 28 years 31 years 30 years 29 years 28 years 31 years ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Age of the fourth boy = (26 x 7 - 3 x 19 - 3 x 32) years = (182 - 57 - 96) years = 29 years
Number System (3² x 4² x 5) ÷ 36 = (?)² - 80 16 14 10 12 16 14 10 12 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP (?)² = 3² x 4² x 5/36 + 80= 20 + 80 = 100∴ ? = √100 = 10
Number System 74698 + 365 + 85213 + 95 = ? 160371 160341 160361 160351 160371 160341 160361 160351 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP ? = 74698 + 365 + 85213 + 95 = 160371
Number System √207.36 = ? 14.4 12.3 15.7 16.7 14.4 12.3 15.7 16.7 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP √207.36 = √20736/√100 = 144/10 = 14.4
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 ? 163 160 158 167 163 160 158 167 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
EXAMIANS