Neeta saves in a Mahila Bachat Gat `₹2` on the first day, `₹4` on the second day, `₹6` on the third day and so on. What will be her saving in the month of February, 2010?

A teacher wanted to reward a student by giving some chocolates. He gave the students two choices. He could either have 60 chocolates at once or he could get 1 chocolate on the first day, 2 on the second day, 4 on the third day and so on for 6 days, which option should the student chose to get more chocolates.

Amit saves certain amount every month in a specific way in the first month he saves Rs 200, in the second month Rs 250, in the third month Rs 300 and so. On. How much will be his savings in 17 months?

Jinal saves ₹1600 during first year,₹2100 in the second year,₹2600 in the third year,If she continues her saving in this pattern,in how many years will she save ₹38,500?

Sachin invested some amount in National Savings certificates in a specific way. In the first year, he invested Rs 4000, in the second year Rs 6000, in the third year Rs 8000 and so on for 12 years . Find the total amount he invested in 12 years.

On the World Environment Day tree plantation programme was arranged on a land which is triangular in shape. Trees are planted such that in the first row there is one tree, in the second row there are two trees, in the third row there are three trees and so on. Then find the total number of trees in 25 rows.

On 1st January 2016, Sanika decides to save ₹10 , ₹11 on second day, ₹12 on third day. If she decides to save like this, then on 31st December 2016 what would be her total saving?

As shown in the figure, place an onion on each gas jar in such a way that its base (roots) will remain dipped in water. Measure and record the length of the roots of both onions on the first, second and third day. On the fourth day, cut off 1 cm of the roots of the onion in flask B Measure the length of the roots of both onions for the next five days and record table. Why did the roots of the onion in jar B stop growing?

As shown in the figure, place an onion on each gas jar in such a way that its base (roots) will remain dipped in water. Measure and record the length of the roots of both onions on the first, second and third day. On the fourth day, cut off 1 cm of the roots of the onion in flask B Measure the length of the roots of both onions for the next five days and record table. Which onion has longer roots? Why?