Explanation

Check the pattern:

1 = 1³  

8 = 2³  

27 = 3³  

65 = ?  

4³ = 64, not 65  

So 1, 8, 27 are perfect cubes. 65 does not fit.

Last verified on 28-07-2026

Explanation

2 = 1³ + 1 = 1 + 1  

9 = 2³ + 1 = 8 + 1  

28 = 3³ + 1 = 27 + 1  

65 = 4³ + 1 = 64 + 1  

Next term = 5³ + 1 = 125 + 1 = 126

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Explanation

The sequence decreases by values that drop by 10 each step: −55, −45, −35, −25.

285 − 55 = 230

230 − 45 = 185

185 − 35 = 150

150 − 25 = 125

Therefore, the missing number is 185.

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Explanation

6-2=4, 12-6=6, 20-12=8, 30-20=10  

Differences go 4, 6, 8, 10... next is 12  

So 30 + 12 = 42

Last verified on 13-06-2026

Explanation

Pattern:

1^3 + 1 = 1 + 1 = 2  

2^3 + 2 = 8 + 2 = 10  

3^3 + 3 = 27 + 3 = 30  

4^3 + 4 = 64 + 4 = 68  

5^3 + 5 = 125 + 5 = 130  

Next term = 6^3 + 6 

= 216 + 6 

= 222

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Explanation

Given numbers = 1, 5, 7, 9, 11

Add 13

New series = 1, 5, 7, 9, 11, 13

Total numbers = 6, which is even

For even numbers, median = average of middle 2 numbers

Middle 2 numbers = 3rd and 4th number = 7 and 9

Median = (7 + 9) / 2

= 16 / 2

= 8

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Explanation

The colors repeat in the same order:

Green → Yellow → Blue → White → Green → …

So the next color is Green.

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Explanation

Series: 5, 16, 49, ?

Check the pattern:

5 _ 3 + 1 = 15 + 1 = 16

16 _ 3 + 1 = 48 + 1 = 49

Rule: Multiply by 3 and add 1

Next term:

49 * 3 + 1 = 147 + 1 = 148

Next number = 148

Last verified on 12-07-2026

Explanation

Pattern: Multiply by 2 and add 3.

7 × 2 + 3 = 17

17 × 2 + 3 = 37

37 × 2 + 3 = 77

77 × 2 + 3 = 157

Last verified on 12-07-2026

Explanation

The pattern increases by 4 each time:

8 → 12 (+4)

12 → 16 (+4)

The next number should be 20, not 21.

Therefore, 21 is the incorrect number.

Last verified on 12-07-2026