26. Which among the following are twin prime numbers?
- (A) 31 and 37
- (B) 7 and 11
- (C) 11 and 13
- (D) 3 and 7
Answer:
Explanation:
27. A A with all sides of different length is called
- (A) A scalene A
- (B) An isosceles A
- (C) An equilateral A
- (D) A right angled A
Answer:
Explanation:
28. A ______ is used for measuring angles.
- (A) Protractor
- (B) Compass
- (C) Divider
- (D) Ruler
Answer:
Explanation:
29. An isosceles triangle
- (A) Is a triangle whose two sides and two angles are equal
- (B) Is a triangle whose all the three sides and three angles are equal
- (C) Is a triangle whose all the three sides and angles measure different
- (D) Is a triangle with two acute angles.
Answer:
Explanation:
30. The simplest form of 1.5:2.5 is:
- (A) 6: 10
- (B) 15: 25
- (C) 0.75: 1.25
- (D) 3:5
Answer:
Explanation: