Below are three problems based on series involving geometric progression.
If the sum of the first two terms of a G.P is 4.848 and the sum of first four terms is 14.484 then the 4th term of the G.P is:
a)2 b)2sqrt2 c)4 d)4sqrt4
Answer : d)4sqrt4
Dear Reader, Below are three questions where you have to calculate percentage increase/decrease in areas or sides.
The length of a rectangle was increased by 40% and breadth was decreased by 22%. By how much percentage the area would have increased/decreased?
a) Decrease of 0.92% b) increase of 10.92% c) increase of 0.092% d) increase of 9.2%
Dear Reader, Below are three questions based on simple and compound interests.
Kishen Raj got an increase of 50% of the amount he invested in Simple Interest in 5 years.What will be his return on 100000/- at compound interest after 2 years at the same rate?
(a) 21000 (b)21600 (c)32100 (d) 31200
Answer : a) 21000
Dear Reader, Below are four sample questions based on train speeds and distances.
Mumbai Rajadhani express left Delhi for Mumbai at 09.30 hrs, travelling at a speed of 60 kmph and Delhi Super Fast Express left Delhi for Mumbai on the same day at 11.30 hrs. travelling at a speed of 80 kmph. How far away from Delhi will the two trains meet ?