Test: High Order Thinking Skills - 4 - Class 4 MCQ

• Option A: True. The number 0 is neither positive nor negative.
• Option B: False. The number 1 is not a prime number because it has only one factor (1 itself).
• Option C: True. A parallelogram has opposite sides that are equal.
• Option D: True. The perimeter of a rectangle is 2 × (length + width).
  So, the incorrect option is Option B.

• Option A: True. The product of 0 and any number is 0.
• Option B: False. A circle has infinite lines of symmetry.
• Option C: True. The sum of any three odd numbers is odd.
• Option D: True. The greatest 2-digit number is 99 and the smallest is 10. The difference is 99 - 10 = 89.

So, the incorrect option is Option B.

• Option A: True. The number 12 has six factors: 1, 2, 3, 4, 6, and 12.
• Option B: True. The square root of 36 is 6.
• Option C: True. The product of any number and 1 is the number itself.
• Option D: False. A triangle cannot have more than one right angle.

So, the incorrect option is Option D.

• Option A: True. The number 5 is both prime and odd.
• Option B: False. A rectangle has opposite sides of equal length, not all four sides.
• Option C: True. The LCM of 6 and 8 is 24.
• Option D: True. The difference between two consecutive even numbers is 2.

So, the incorrect option is Option B.

Initial amount: ₹20,000 Expenses:
- Petrol: ₹3,200 - Meal: ₹4,850
- Souvenirs: ₹2,100 - Snacks: ₹1,350
- Helpers: ₹500 × 3 = ₹1,500
Total expenses: ₹3,200 + ₹4,850 + ₹2,100 + ₹1,350 + ₹1,500 = ₹13,000
Amount left: ₹20,000 - ₹13,000 = ₹7,000 So, the correct answer is Option c) ₹7,000.

• Option A: True. A square has all four sides equal.
• Option B: False. A rectangle has two lines of symmetry, not four.
• Option C: True. A circle is a closed figure.
• Option D: True. The diameter of a circle is twice its radius.

So, the incorrect option is Option B.

• Option A: True. A triangle can have exactly one right angle.
• Option B: True. A square is a type of rectangle where all sides are equal.
• Option C: True. A parallelogram has opposite sides equal and parallel.
• Option D: False. The sum of the angles in any quadrilateral is 360°, not 180°.

So, the incorrect option is Option D.

Fig.
Total number of equal parts = 12
Number of shaded parts = 6
Number of unshaded parts = 6
So, shaded fraction = 6/12 = 1/2
Unshaded fraction = 6/12 = 1/2

Fig.
Total number of equal parts = 6
Number of shaded parts = 3
Number of unshaded parts = 3
So, shaded fraction = 3/6 = 1/2
Unshaded fraction = 3/6 = 1/2

Fig. 
Total number of equal parts = 5
Number of shaded parts = 2
Number of unshaded parts = 3 
So, shaded fraction = 2/5
Unshaded fraction = 3/5
A. Correct;

• HCF of 4 and 12 = 4 So, digit at ones place = 4
• Digit at hundreds place = 2 × 4 = 8
• Digit at thousands place = Greatest 1-digit prime number  = 7
• Since, sum of all of its digits = 20
  So, digit at tens place = 20 – 4 – 8 – 7 = 1
  So, required number = 7814