Quantitative Aptitude - Arithmetic Ability Questions

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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There is 40% increase in an amount in 10 years at simple interest. What will be the compound interest of Rs 25000 after 2 years at the same rate?

Calculate the simple interest if Rs. 1800 is invested for 10 years at a rate of 5% per annum.

Rs. x invested at 9% simple interest per annum for 5 years yields the same interest as that on Rs. y invested at 6.25% simple interest per annum for 8 years. Find x:y.

How many balls of radius 2 cm can be made by melting a bigger ball of diameter 16 cm? (Take π = 22/7)

Select the odd letters from the given alternatives.

Find the odd word/letters/number pair from the given alternatives.

A businessman imported Laptops, worth Rs 210000, Mobile phones worth Rs 100000 and Television sets worth Rs 150000. He had to pay 10% duty on laptops, 8% on Phones and 5% on Television sets as a special case. How much total duty (in Rupees) he had to pay on all items as per above details?