Which of the following numbers is a perfect square?

The pH of a solutiion is 3. When its pH changes to 6, then H+ ion concentration

Solve the following :

(-4){19 - (-2) x (-8)} = ?

'Freedom Trail' is a 2.5 mile long passage that offers a rich insight into the American Revolution. In which US city would you find this famous and historic trail?

The selling price of an item inclusive of a 10% profit was Rs.440. What would be the percentage loss if the item was sold for Rs. 370?

A man walks 10 kms towards east, then takes a right turn and walks 8 km and again takes a left and walks 6km. In which direction is the man with respect to his starting position?

Which is the form of energy that does NOT occur while riding a bicycle?

In the given series, how many 8s are there that are not divisible by the number to its left but completely divisible by the number to its right.

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