MEDIUM
10th Foundation
IMPORTANT
Earn 100

A manufacturer of laptop produced 6000 units in 3rd year and 7000 units in the 7th year. Assuming that production increases uniformly by a fixed number every year, find production in 5th year.

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Important Questions on Arithmetic Progressions

MEDIUM
10th Foundation
IMPORTANT
Raghav buys a shop for 12000. He pays half of the amount in cash and agrees to pay the balance in 12 annual instalments of 5000 each. If the rate of interest is 12% and he pays the interest due on the unpaid amount with the instalment. Find the total cost of the shop.
MEDIUM
10th Foundation
IMPORTANT
There are 25 trees at equal distance of 5 metres in a line with a well, the distance of the well from the nearest tree being 10 metre. A gardener waters all the trees separately starting from the well and he returns to the well after watering each tree to get water for the next. Find the total distance the gardner will cover in order to water all the trees.
EASY
10th Foundation
IMPORTANT
Which of the following statement is CORRECT?
a. Sum of n terms of the list of the numbers 2,8,18,32,is n(n+1)2

b. The common difference of A.P. given by an=3n+2 is 3.

c. The sum of the A.P. (-5),(-8),(-11),...(-230)is-8930

MEDIUM
10th Foundation
IMPORTANT
If there are (2n+1) terms in A.P. then find the ratio of the sum of odd terms to the sum of even terms.
MEDIUM
10th Foundation
IMPORTANT
If an+1+bn+1an+bn is the A.M. between a and b, then find the value of n
MEDIUM
10th Foundation
IMPORTANT
The sum of the third and seventh terms of an A.P. is 6 and their product is 8. Find the sum of first sixteen terms of the A.P.
MEDIUM
10th Foundation
IMPORTANT
If the ratio of sum of n terms of two A.P. is (7n+1):(4n+27), then ratio of their mth term is ____
EASY
10th Foundation
IMPORTANT
Sum of n odd natural number is ____