Explanation

Roman Number 51-100

51 - LI

52 - LII

53 - LII

54 - LIV

55 - LV

56 - LVI

57 - LVII

58 - LVIII

59 - LIX

60 - LX

61  - LXI

62 - LXII

63 - LXIII

64 - LXIV

100 - C

Last updated 18-07-2026 by NA

Explanation

Explanation

• The sum of the three interior angles of a triangle is 180°.
• This rule applies to all types of triangles.
• If two angles are known, the third angle = 180° − (sum of the other two angles).
• It is a basic rule of geometry.
• This property is known as the Angle Sum Property.

Last updated 17 july 2026 by NA

Explanation

The pattern of the sequence appears to be formed by adding consecutive increments:

1 + 4 = 5

5 + 9 = 14

14 + 16 = 30

30 + 25 = 55

55 + 36 = 91

The next term in the sequence would be 91.

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Explanation

Explanation

Check the pattern:

121 = 11 x 11

144 = 12 x 12

169 = 13 x 13

196 = 14 x 14

So each number is a square of consecutive numbers: 11, 12, 13, 14

Next number will be square of 15

15 x 15 = 225

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Explanation

Explanation

15 men × 20 days = 300 man-days (total work)

Now, with 25 men:

300 man-days ÷ 25 men = 12 days

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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: Multiply by 2 and add 1

1  

3 = 1 x 2 + 1  

7 = 3 x 2 + 1  

15 = 7 x 2 + 1  

31 = 15 x 2 + 1  

63 = 31 x 2 + 1  

? = 63 x 2 + 1 = 127  

Last verified on 11-07-2026