6.Find the next number of the series 1,2,6,21,88...... A) 176 B) 126 C) 338 D) 445 View Answer Report DiscussAnswer: Option DExplanation:The series in a pattern that the number multiplies by the previous term with k and add k to get the result. 2=1(predecessor)multiplies by 1(k) and add 1(k) 6=2X2+2 (K=2) 21=6X3+3(K=3) 88=21X4+4(K=4) So, the next number k should be 5. So, 88X5+5=445.
7.Find the next term of the series 2,6,10,3,9,13,4,12...... A) 16 B) 15 C) 18 D) 17 View Answer Report DiscussAnswer: Option AExplanation:First term multiplies by 3 to get second term(6)and if 4 add to second term to get third term ie 10.Fourth term is 3 which is 2+1.Then 3 multipled by 3 to get fifth term 9, add 4 to 9 to get sixth term ie 13 .The next number of series is 4 (ie 3+1),12(4x3) .So, next number should be add 4 to its predecessor ie, 12+4=16.
8.Find the next number in the series 1,1,2,3,5,8.... A) 9 B) 13 C) 11 D) 12 View Answer Report DiscussAnswer: Option BExplanation:Each term starting with the third term. 2=1+1 3=2+1 5=3+2 8=3+5 So, next should be addition of 5 and 8 is 13.
9.Find the next term of the series 1,4,9,1,6,2,5,3,..... A) 4 B) 8 C) 6 D) 9 View Answer Report DiscussAnswer: Option CExplanation:First three numbers are the square of 1,2,3 respectively. As next number we should get 16 but in the series, this 16 is two digit and is written seperatively.After 16 it is 25 written seperatively. So, next is 36.3 is given and the number is 6.
10.Find the next number of the series 8,24,48,120,168..... A) 388 B) 188 C) 288 D) 488 View Answer Report DiscussAnswer: Option CExplanation:2nd term is 3 times of the first term. The third term is 2 times of the second but after that, it follws the one less than squares of prime numbers So, the next number will be $17^{2}-1=288$
