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number series 2

NUMBER SERIES

Number Series 1

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Practice problems

 

Some more types of series

1. Adding or subtract of natural numbers:

Example:

i) 6, 7, 9, 12, 16, 21, … Explanation: (6+1), (7+2), (9+3), (12+4), (l6+5) so, the next number is (21 + 6) = 27

2. Add the pattern:

Example:

i) 10, 20, 40, 70, 110, … Explanation: (10+10), (20+20), (40+30), (50+40) so, the next number is 110+50) = 160

3. Subtracting or adding odd numbers:

Example:

i) 27, 26, 23, 18, 11, … Explanation: (27 − 1), (26 − 3), (23 − 5), (18 − 7) so, the next number is (11 − 9) = 2

4. Multiply and add with same natural numbers:

Example:

i) 5,6,14,45 … Explanation: (5 x 1) +1, (6 x 2) +2, (14 x 3) + 3, so, the next number is (45 x 4) +4 = l84

5. Multiply and add with a different fixed numbers:

Example:

i) 3, 9, 21, 45, 93 … Explanation: (3 x 2) +3, (9 x 2) +3, (21 x 2) + 3, (45 x 2) + 3, so, the next number is (92 x 2) +3 = l87

6. Multiply with fixed number and add different numbers:

Example:

i) 12, 25, 52, 107… Explanation: (12 x 2) +1, (25 x 2) +2, (52 x 2) +3, so, the next number is (107 x 2) + 4 = 218

7. Multiply the sequence number:

Example:

i) 7, 14, 42, 168, 840… Explanation: (7 x 2), (14 x 3), (42 x 4), (168 x 5) so, the next number is (840 x 6) = 5040

8. Dividing with a fixed number:

Example:

i) 256, 128, 64, 32, 16, … Explanation: (256/2), (128/2), (64/2),(32/2), … so, the next number is (l6/2) = 8

9. Multiply and divide with a different fixed numbers:

Example:

i) 12, 60, 30, 150, 75, ….. Explanation: (l2 x 5), (60/2), (30 x 5),(l50/2), … so, the next number is (75 x 5) = 375

Practice problems

Give options to all questions. After clicking the submit button view the score.If you get less marks then try again.

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