Number System What is the sum of all the composite numbers up to 20? 128 130 131 132 128 130 131 132 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 4 + 6 + 8 + 9 + 10 + 12 + 14 + 15 + 16 + 18 = 132
Number System In how many different ways can the letters of the word "MOBILIZE" be arranged ? 18456 19765 17453 20160 18456 19765 17453 20160 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP The word MOBILIZE has eight letters in which I comes twice ∴ Number of arrangements = 8!/2! = 20160
Number System (95.6x 910.3) ÷ 92.56256 = 9? 12.24 13.34 14.44 15.54 12.24 13.34 14.44 15.54 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 13.34
Number System 35%of ?=242 693 487 394 542 693 487 394 542 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 693
Number System The sum of the ages of a son and father is 65 years. After 5 years the age of father will be double of the age of son. What is the age of son ? 19 years 20 years 18 years 17 years 19 years 20 years 18 years 17 years ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the age of the son be x and the age of the father be y.Therefore, x + y = 65 ..........(i)or, 2 x (x + 5) = (y + 5)or, 2x + 10 = y + 5or, 2x - y = 5 ...................(ii)From equations (i) and (ii), x = 20, y = 45
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