Basic Maths Mcqs

Q.  The average of 13 numbers is 60. Average of the first 7 of them is 57 and that of the last 7 is 61. Find the 8th number?

a. 46
b. 32
c. 68
d. 51


ANSWER: See Answer
 
Sum of all the 13 numbers = 13 * 60 = 780
Sum of the first 7 of them = 7 * 57 = 399
Sum of the last 7 of them = 7 * 61 = 427
So, the 8th number = 427 + 399 – 780 = 46
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Category: Mathematics Quizzes,   Published by: T-Code Scripts
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MCQs:  The average of 11 numbers is 10.9. If the average of first six is 10.5 and that of the last six is 11.4 the sixth number is_____________?
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MCQs:  What are Prime Numbers?
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MCQs:  The temperature at noon in LHR ,Pakistan was 6 deg on Monday ,4deg on Tuesday,2deg below zero on Wednesday,3deg below zero on Thursday, 0 deg on Friday ,3 deg on Saturday ,and 6 deg on Sunday. What was the average temperature at noon for the week ?
Category: Mathematics Quizzes,   Published by: T-Code Scripts
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MCQs:  The average weight of 16 boys in a class is 50.25 kg and that of the remaining 8 boys is 45.15 kg. Find the average weights of all the boys in the class.
Category: Mathematics Quizzes,   Published by: T-Code Scripts
MCQs:  The average weight of A, B and C is 45 kg. If the average weight of A and B be 40 kg and that of B and C be 43 kg, then the weight of B is___________?
Category: Mathematics Quizzes,   Published by: T-Code Scripts
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