Explanation

 15: 7 :: x: 560

15/7  = x / 560 

15/7 x 560 

x= 15 x 80 

x =  1200

Last update 0n 21-07-2026 by NA

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

This is an inverse proportion problem.

Formula:

Given:

• Men₁ = 39
• Days₁ = 29
• Men₂ = 29
• Days₂ = ?

Last updated 18-07-2026 by NA

Explanation

Co-prime numbers have no common factor except 1.

Their HCF (Highest Common Factor) is 1.

2, 4

• Factors of 2 = 1, 2
• Factors of 4 = 1, 2, 4
• Common factors = 1, 2
• HCF = 2  Not co-prime

3, 6

• Factors of 3 = 1, 3
• Factors of 6 = 1, 2, 3, 6
• Common factors = 1, 3
• HCF = 3  Not co-prime

4, 10

• Factors of 4 = 1, 2, 4
• Factors of 10 = 1, 2, 5, 10
• Common factors = 1, 2
• HCF = 2  Not co-prime

2, 9

• Factors of 2 = 1, 2
• Factors of 9 = 1, 3, 9
• Common factor = 1
• HCF = 1 Co-prime

Last updated 17 july 2026 by NA

Explanation

(x+7) x 3-5/ 4 = 7 

3 ( x+7) - 5 = 7 x 4 

3x + 21 -5 = 28 

3x + 16 = 28 

3x = 28 -26 

3x = 12

x = 12/3

x = 4

***

Last updated 17 July 2026 by NA

Explanation

The pattern alternates between +2 and ×2:

• 4 → 6 (+2)
• 6 → 12 (×2)
• 12 → 14 (+2)
• 14 → 28 (×2)
• 28 → 30 (+2)
• 30 → 60 (×2)

Last updated 17 july 2026 by NA

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

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

Explanation

Selling price = Cost + 10% profit

220 = Cost + 0.10 × Cost

220 = 1.10 × Cost

Cost = 220 / 1.10

= 200

Last verified on 30-03-2026