@neha-singh Let the marked price of the shirt be Rs. 1000 => Price after first discount = Rs. 1000 – 20 % of Rs. 1000 = Rs. 1000 – 200 = Rs. 800...

@neha-singh Probability of getting both are red = 9c2/14c2 = 36/91

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@neha-singh The number of possible entries of 2×2 matrix is 4. Every entry has two choice, 0 or 1. Thus, the total number of choices is = 2×2×2×2...

@neha-singh (800)! number of trailing zeroes = 800/5 + 160/5 + 32/5 + 6/5 = 160 + 32 + 6 + 1 = 199

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@sachin-yadav

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@neha-singh Let the entire salary = 100% Education expenditure = 20% Conveyance and clothes expenditure = (100 - 20) × 30% = 24% Rent and mai...

@lydiamadini solution24: The answer is c