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Elementary Mathematics

Elementary Mathematics Topics

School level (Class 6–12) — Elementary Mathematics

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Number Systems

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quiz Questions

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Q61

If 5x + 33 = 83, find x.

1 · 2 marks · MCQ

A.

9

B.

16

C.

12

D.

10

Explanation

5x = 50 ⇒ x = 10.

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Q62

If 3x + 33 = 69, find x.

2 · 2 marks · MCQ

A.

14

B.

11

C.

23

D.

12

Explanation

3x = 36 ⇒ x = 12.

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Q63

If 4x + 33 = 77, find x.

3 · 2 marks · MCQ

A.

10

B.

11

C.

13

D.

19

Explanation

4x = 44 ⇒ x = 11.

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Q64

If 6x + 6 = 30, find x.

4 · 2 marks · MCQ

A.

5

B.

4

C.

6

D.

3

Explanation

6x = 24 ⇒ x = 4.

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Q65

If 9x + 8 = 62, find x.

5 · 2 marks · MCQ

A.

5

B.

832

C.

8

D.

6

Explanation

9x = 54 ⇒ x = 6.

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Q66

If 8x + 25 = 145, find x.

1 · 2 marks · MCQ

A.

15

B.

17

C.

14

D.

18

Explanation

8x = 120 ⇒ x = 15.

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Q67

If 5x + 16 = 61, find x.

2 · 2 marks · MCQ

A.

9

B.

12

C.

11

D.

8

Explanation

5x = 45 ⇒ x = 9.

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Q68

If 9x + 25 = 52, find x.

3 · 2 marks · MCQ

A.

3

B.

2

C.

5

D.

156

Explanation

9x = 27 ⇒ x = 3.

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Q69

If 3x + 13 = 49, find x.

4 · 2 marks · MCQ

A.

16

B.

14

C.

12

D.

11

Explanation

3x = 36 ⇒ x = 12.

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Q70

If 9x + 21 = 57, find x.

5 · 2 marks · MCQ

A.

4

B.

780

C.

3

D.

6

Explanation

9x = 36 ⇒ x = 4.