A. 15
B. 10
C. 18
D. 16
Complete the series; 3,4,7,8,11,12
Sol:
3+1=4 ( add 1)
4+3=7 (add 3)
7+1=8 (add 1)
8+3=11 (add 3)
11+1=12 (add 1)
Now add “3” in 12
12+3=15
A. 15
B. 10
C. 18
D. 16
Complete the series; 3,4,7,8,11,12
Sol:
3+1=4 ( add 1)
4+3=7 (add 3)
7+1=8 (add 1)
8+3=11 (add 3)
11+1=12 (add 1)
Now add “3” in 12
12+3=15