Number System What should come in the place of question mark (?) in the number series given below? 157 158 159 160 157 158 159 160 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 160
Number System In how many different ways can the letters of the word FORMULATE be arranged ? 382880 362880 372880 392880 382880 362880 372880 392880 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP No. of letters = 9! = 9*8*7*6*5*4*3*2*1 = 362880
Number System 5525 ÷ 17 = √? 93025 99225 105625 112225 93025 99225 105625 112225 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP √? = 5525/17 = 325∴ ? = (325)² = 105625
Number System The peresent age of the father and the son are in the ratio of 8:3. After 12 years the ratio of their ages will be 2:1. What is the sum of the present age of the father and the son ? 68 years 67 years 66 years 69 years 68 years 67 years 66 years 69 years ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the present age of the father be 'x' and that of the son be 'y'. Then x/y = 8/3∴ 3x = 8y Further, x + 12/y + 12 = 2/1 ∴ x + 12 = 2y + 24 ∴ x - 2y = 12 ......(ii)From eqn (i) and (ii), x = 48, y = 18 ∴ sum = 66 yrs.
Number System If the fractions8/5,7/2,9/5,5/4,4/5 are arranged in descending order of their values, which one will be fourth? 11/13 5/4 7/9 1/3 11/13 5/4 7/9 1/3 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 5/4
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: 5 10 6 4 5 10 6 4 ANSWER DOWNLOAD EXAMIANS APP
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