NDA Practice Questions — All Questions

The value of sin 30 degrees is:

• a.1
• b.1/2✓
• c.0
• d.√3/2

sin 30° = 1/2.

If x^2 = 49, the positive value of x is:

• a.7✓
• b.14
• c.24.5
• d.9

x = √49 = 7.

The value of 2^5 is:

• a.10
• b.16
• c.32✓
• d.25

2^5 = 32.

cos 0 degrees equals:

• a.0
• b.1/2
• c.√3/2
• d.1✓

cos 0° = 1.

The sum of angles in a triangle is:

• a.90 degrees
• b.180 degrees✓
• c.270 degrees
• d.360 degrees

A triangle's interior angles sum to 180°.

Solve: 4x - 8 = 0.

• a.x = 2✓
• b.x = 4
• c.x = 8
• d.x = -2

4x = 8, so x = 2.

The value of 15% of 200 is:

• a.15
• b.25
• c.30✓
• d.45

0.15 x 200 = 30.