Mathematics (F.Sc)

Q: For the final step in a calculation Ahmad accidentally divided by 100 instead of multiplying with 1000. To find the correct answer he should

(a) :  divide by 1000
(b) :  divide by 100
(c) :  multiply by 100000
(d) :  multiply by 100
(e) :  none
Answer:  multiply by 100000
Explanation:  

Q: (1x10000)+(2x1000)+(3x100)+(4x10)+(5x1)=1

(a) :  5000
(b) :  15000
(c) :  12345
(d) :  54321
(e) :  543210
Answer:  12345
Explanation:  

Q: Which of the following are like fractions?

(a) :  2/7 and 2/6
(b) :  3/7 and 6/7
(c) :  8/3 and 3/8
(d) :  all
(e) :  none
Answer:  3/7 and 6/7
Explanation:  

Q: The population of a town increases at a rate of 15% per year. At present population is 4000. What will it be after 2 years?

(a) :  5290
(b) :  5200
(c) :  5431
(d) :  500
(e) :  none
Answer:  5290
Explanation:  

Q: (a2bc+ab2c+abc2) / abc =

(a) :  ab+ab+bc
(b) :  ab+bc+ca
(c) :  a+b+c
(d) :  All
(e) :  none
Answer:  a+b+c
Explanation:  

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