Convex and concave mirrors are examples of?
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The arrangement of leaves on an axis or stem is called
Who invented the vacuum pump?
What did J. B. Dunlop invent?
Amartya Sen won Nobel Prize for?
Z’s present age is 55 years. If 11 years ago, C’s age was 1/11 of Z’s age, then after how many years C’s age will become 37 years?
5% more is gained by selling a watch for Rs. 350 than by selling it for Rs. 340. The cost price of the watch is
If x+1x = 4, then what is the value of x6+1x6 ?