1. What number should replace the question mark ?
1,5,11,19,29,?,55
A:- 41
1
1+4 = 5
5+6 = 11
11+8 = 19
19+10 = 29
29+12 = 41
41+14 = 55.
2. What number should replace the questiion mark ?
6,10,18,34,?
A:- 66
6
6+4 = 10
10+8 = 18
18+16 = 34
34+32 = 66.
3. Look at this series : 1000,200,40,... What number should come next ?
A:- 8
1000
1000/5 = 200
200/5 = 40
40/5 = 8.
4. Look at this series : 5.2,4.8,4.4,4,..... What number should come next ?
A:- 3.6
5.2
5.2-0.4 = 4.8
4.8-0.4 = 4.4
4.4-0.4 = 4
4.0-0.4 = 3.6.
5. Look at this series : 2,6,18,54,...... What number should come next ?
A:- 162
2
2+4 = 6
6+12 = 18
18+36 = 54
54+108 = 162.
1,5,11,19,29,?,55
A:- 41
1
1+4 = 5
5+6 = 11
11+8 = 19
19+10 = 29
29+12 = 41
41+14 = 55.
2. What number should replace the questiion mark ?
6,10,18,34,?
A:- 66
6
6+4 = 10
10+8 = 18
18+16 = 34
34+32 = 66.
3. Look at this series : 1000,200,40,... What number should come next ?
A:- 8
1000
1000/5 = 200
200/5 = 40
40/5 = 8.
4. Look at this series : 5.2,4.8,4.4,4,..... What number should come next ?
A:- 3.6
5.2
5.2-0.4 = 4.8
4.8-0.4 = 4.4
4.4-0.4 = 4
4.0-0.4 = 3.6.
5. Look at this series : 2,6,18,54,...... What number should come next ?
A:- 162
2
2+4 = 6
6+12 = 18
18+36 = 54
54+108 = 162.
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