Explanation

A matrix with all elements equal to zero is called a Zero Matrix.

Explanation

A Vernier caliper is the most suitable instrument for measuring the internal diameter of a cylinder

As it is designed with internal jaws to provide precise measurements of internal dimensions with high accuracy

For more specialized applications, an internal micrometer or a dial bore gauge can also be used for even greater precision and to check for out-of-roundness or wear. 

Explanation

Transpose of a matrix means converting rows into columns.

Given matrix A:  

[ 1   8

  9   2 ]

Transpose Aᵗ:  

[ 1   9

  8   2 ]

Explanation

66, 63, 57, 45, ?

Now check the differences between terms:

- 66 → 63  (−3)  

- 63 → 57  (−6)  

- 57 → 45  (−12)  

Pattern: −3, −6, −12, which is multiplying by 2 each time.

So, the next difference: −24

45 − 24 = 21

Explanation

5² = 5 × 5 = 25

Explanation

Step 1: Understand what 10% means  

10% means 10 out of every 100, or 10/100

Step 2: Multiply 10% by 200  

(10/100) × 200 = (1/10) × 200 = 20

Explanation

According to BODMAS (Brackets, Orders, Division, Multiplication, Addition, Subtraction):

2 + 3 × 4  

= 2 + 12  

= 14

Explanation

Step 1: Convert 25% to a fraction:  

25% = 25/100

Step 2: Multiply the fraction by 320:  

(25/100) × 320 = 0.25 × 320

Step 3:  

0.25 × 320 = 80

Explanation

The first word of the Quran revealed by Allah was "Iqra" (Read)

Iqra was the first revealed word in the Holy Quran

5 verses of Surah Al-Alaq were first revealed by the Holy Prophet (PBUH)

Explanation

To find the average:

First, convert all fractions to a common denominator (4):

1/2 = 2/4

3/2 = 6/4

3/4 = 3/4

5/4 = 5/4

Now, add:

(2/4) + (6/4) + (3/4) + (5/4) = 16/4

= 4

Average = 4 / 4

= 1