Explanation

Given:

Side of square = 2.5 cm

Formula:

Perimeter=4×Side

Calculation:

=4×2.5

=10 cm

Explanation

2 + 3 = 5

5 + 7 = 12

12 + 11 = 23

23 + 15 = 38

38 + 19 = 57

57 + 23 = 80

Last verified on 31-03-2026

Explanation

Series: 13, 32, 24, 43, 35, ?, 46, 65, 57, 76

Notice the pattern alternates:

+19, −8, +19, −8, +19, −8, +19, −8, +19

So:

35 + 19 = 54

Then 54 − 8 = 46, which matches.

Explanation

The sum of the interior angles of a polygon can be calculated using the formula:

(n-2) × 180°, where n is the number of sides.

For a hexagon, n = 6.

Sum of interior angles = (6-2) × 180°

= 4 × 180°

= 720°

Last verified on 07-10-2026

Explanation

1², 2², 3², 4², 5²

1, 4, 9, 16, 25

Last verified on 07-10-2026

Explanation

At 3:00, the minute hand is at 12 and the hour hand is at 3.

The angle between them is 90° (a right angle).

Last verified on 07-09-2026

Explanation

Divide the numerator by the denominator. 

3 ÷ 4 = 0.75

Last verified on 07-10-2026

Explanation

LCM of 18 and 24

18 = 2 × 3²

24 = 2³ × 3

LCM = 2³ × 3² = 8 × 9 = 72

Last verified on 06-10-2026

Explanation

15% of 240 = (15/100) × 240

= 0.15 × 240 = 36

Last updated by NA on 24-April-2026

Explanation

1. Current Ages:

   • Let Zoya’s current age be $x$
   • Then, Zaid’s current age is $6x$ (since he is six times as old as Zoya).

2. The sum of Ages in 7 Years:

   • In 7 years, Zoya's age will be $x + 7$ and Zaid's age will be $6x + 7$.
   • The sum of their ages in 7 years will be $(x+7)+(6x+7)=49$.

Step 1: Formulate the Equation

x+7+6x+7=49
$$7x+14=49$$

Step 2: Solve for $x$

Subtract 14 from both sides:

$$7x=35$$

Now divide by 7:

$$x=5$$

So, Zoya’s current age is $5$ years and Zaid’s current age is:

$$6x=6\times 5=30$$

Step 3: Determine Zaid’s Age When Zoya Was Born

When Zoya was born, Zaid would have been:

$$30-5=25$$