Explanation

Given:

Side of square = 2.5 cm

Formula:

Perimeter=4×Side

Calculation:

=4×2.5

=10 cm

Explanation

Given:

Average of 5 numbers = 4

2 is added to each number.

Formula:

Average = Sum of numbers ÷ Number of numbers

Original Sum = 4 × 5 = 20

After adding 2 to all 5 numbers:

New Sum = 20 + (2 × 5) = 30

New Average = 30 ÷ 5 = 6

Explanation

Average of 10 values = 200

Total sum = Average × Number of values

= 200 × 10

= 2000

Sum of 9 values = 1850

10th value = 2000 − 1850 = 150

Explanation

• Baitul Mamoor is on seventh Heaven. 
• The house located directly above the Kabah on Earth,
• Where 70,000 angels perform tawaaf (circumambulation) daily and never return. 

There are seven heavens in Islam.

1) Dar al-Salam

2) Dar al-Jalal

3) Jannatul Mava

4) Jannatul Khuld

5) Jannatul Adan

6) Jannatul Firdous

7) Jannatul Naeem 

**

 Last updated NA 13-04-2026

Explanation

Total ratio parts = 2 + 3 + 5 = 10

A's ratio = 2

A's investment = (2/10) × 12 lac = 2.4 lac

Last verified on 15-03-2026

Explanation

Explanation

x/5 + 4 = x/4 -10

x/5 - x/4 = -10 -4

4x - 5x /20 = -14

4x - 5x = -14 x 20

- x = - 280

x = 280

Explanation

Explanation

6, 9, 13, 16, 20, 23, ......

+3 +4 +3 +4 +3 +4

6+3 = 9

9+4 = 13

13+3 = 16

16+4 = 20

23 + 4 = 27

So, 27, 30

Explanation

To find how many times digit 3 appears from 1 to 100, count how often it appears in:

1. Units place:

Numbers with 3 in units place:  

3, 13, 23, 33, 43, 53, 63, 73, 83, 93 → 10 times

2. Tens place:

Numbers with 3 in tens place:  

30–39 → 10 times

3. Total:  

10 (units) + 10 (tens) = 20 times

SH18-8-2023