D) all of these
A Shopkeeper charges sales tax of x% upto Rs.2,000 and above it he charges y%. A customer pays total tax of Rs 320, when he purchases the goods worth Rs. 6,000 and he pay’s the total tax of Rs. 680 for the goods worth Rs. 12,000. The value of (x-y) is:
‘ Queen’s berry rules ‘ is the name given to the rules in
Ozone hole refers to
Comprehensive income includes all of the following except
Which of the following is most urbanised State of India
A student was asked to find the arithmetic mean of the numbers 3, 11, 7, 9, 15, 13, 8, 19, 17, 21, 14 and x. He found the mean to be 12. What should be the number in place of x ?
A son and father goes for boating in river upstream . After rowing for 1 mile son notices the hat of his father falling in the river. After 5 min he tells his father that his hat has fallen. So they turn round and are able to pick the hat at the point from where they began boating after 5min. Find the speed of river in miles/hours ?
In a simultaneous throw of pair of dice. Find the probability of getting the total more than 7.
On which day ‘ National Science Day ‘ is celebrated in India ?
The first and last terms of an arithmetic progression are 23 and 42. What is the sum of the series if it has 14 terms?