Math MCQ Questions with answers

Here Important Math MCQ questions are added which are frequently asked in almost all the examinations. You can check the correct answer of any question on clicking the show answer button or on option itself. The Correct answer will be displayed below. You can share any question with your friends on whatsapp by tapping whatsapp button.

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Learn Math MCQs [Page 9 of Department 24]

R

Radhika Singh • 4.69K Points
Extraordinary Math

81) L.C.M of 3/4, 6/7, 9/8 is ?

  • (A) 18
  • (B) 3
  • (C) 3/56
  • (D) 9/28
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Correct Answer - Option (A)

Explanation:

L. C . M = ( L.C.M of 3, 6, 9 ) / (H.C.F of 4, 7, 8)
= 18 / 1
= 18

R

Radhika Singh • 4.69K Points
Extraordinary Math

82) H.C.F . of 1/2, 3/4, 5/6, 7/8, 9/10 is ?

  • (A) 1/2
  • (B) 1/10
  • (C) 9/120
  • (D) 1/120
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Correct Answer - Option (D)

Explanation:

H.C.F = ( H.C.F of 1, 3 , 5, 7, 9) / (L.C.M of 2, 4, 6, 8 , 10)
= 1 / 120

R

Radhika Singh • 4.69K Points
Extraordinary Math

84) L.C.M of 87 and 145 is ?

  • (A) 870
  • (B) 1305
  • (C) 435
  • (D) 1740
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Correct Answer - Option (C)

Explanation:

H.C.F of 87 and 145 is 29
∴ L.C.M = ( 87 x 145) / 29
= 435

R

Radhika Singh • 4.69K Points
Extraordinary Math

87) H.C.F of 42, 63 and 140 is ?

  • (A) 14
  • (B) 9
  • (C) 21
  • (D) 7
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Correct Answer - Option (D)

Explanation:

H.C.F. of 42 and 63 is 21.
∵ H.C.F of 21 and 140 is 7

∴ H.C.F. of 42, 63 and 140 is 7

R

Radhika Singh • 4.69K Points
Extraordinary Math

88) H.C.F of 1/2, 2/3, 3/4, 4/5 is ?

  • (A) 1
  • (B) 12
  • (C) 4/5
  • (D) 1/60
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Correct Answer - Option (D)

Explanation:

H.C.F = ( H.C.F of 1, 2, 3, 4) / (L.C.M of 2, 3, 4, 5)
= 1/60

You are learning MCQ Questions of Math Department : 24 | Page : 9

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