15
4
the answer will be 21
26. for the pattern: add 10, subtract 5, add 10, subtract 5, ...the series is given as x+10-5so here16+10= 26-5=21+10=31-5=26so next no. is 26262626
The Greatest Common Factor of 9, 18, 21: 3
21 over 10 as a mixed number is 21/10
The divisors of 21 are: 1, 3, 7, 21.
21
24
24, they are going up in 3's, 13, 16, 19 and 18, 21 so next number is 24.
21-3=18 18/2=9 9*3=27 that is the pattern so after the 36 it should be 33
13 18 16 21 19 24 22 27 25 ... . This series consists of adding 5 to the first number and subtracting 2 from the next number, repeating the sequence in that order.
The rule is: add 5, subtract 2, add 5, subtract 2, . . . Next number is 24.
24 for each number you add 5 and then subtract 2. 19 plus 5 is 24.
The next number is -21
13 18 16 21 19? After This It's 24 22 27 25 30 28 33 and 31. They First Added 5 To A Number And Subtracted It With 2 And did it again and again for answer!!!
24
291
the answer will be 21