Number System What should come in the place of ' ? ' in the following number series ? 2, 5, 9, 19, 37, ? 76 75 77 78 76 75 77 78 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 2 x 2 + 1 = 5;5 x 2 - 1 = 99 x 2 + 1 = 19: 19 x 2 - 1 = 3737 x 2 + 1 = 75
Number System One-eighth of a number is 76. What will be 54% of the number ? 318.32 321.32 332.32 328.32 318.32 321.32 332.32 328.32 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the no. be x Therefore, 1/8 of x = 76Therefore, x = 60854% of 608 = 608 x 54/100 = 328.32
Number System The difference between 35% of a number and 18% of the same number is 93.5 then what is the 40% of that number ? 225 220 232 245 225 220 232 245 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Diff = (35 - 18)% of x = 93.517x/100 = 93.5Therefore, x = 550Therefore, 40% of 550 = 220
Number System One half of a two digit number exceeds its one third by 6. What is the sum of the digits of the number? 3 5 7 9 3 5 7 9 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP x/2 – x/3 = 6=> x =63 + 6 = 9
Number System Thrice the square of a natural number decreased by 4 times the number is equal to 50 more than the number. The number is: 4 6 5 10 4 6 5 10 ANSWER DOWNLOAD EXAMIANS APP
Number System Radha's present age is three years less than twice her age 12 years ago. Also the respective ratio between Raj's present age and Radha's present age is 4 : 9. What will be Raj's age after 5 years ? 16 years 14 years 15 years 17 years 16 years 14 years 15 years 17 years ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let Radha's present age = x years.∴ x = 2 (x = 12) - 3= x = 2x - 24 - 3= x = 27∴ Raja's present age = 4/9 x 27= 12 years ∴ Raja's age after 5 years = 12 + 5 = 17 years
EXAMIANS