Quantitative Reasoning

Miscellaneous

Easy

If $m - n = 16$ and $m^2 + n^2 = 400$ , the value of mn is

144

192

✅ Correct Option: 1

(m - n) squared = m squared + n squared - 2mn. So 16 squared = 400 - 2mn, giving 256 = 400 - 2mn and mn = 72.

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The total number of people owing books more than '40' is

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Which is the greatest among $16\frac{2}{3}\%$ , $6\frac{1}{2}\%$ , $\frac{2}{17}$ and $0.173$ ?

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From the given series, which are in Arithmetic Progression?

A. 7, 14, 21, 28, …

B. 9, 17, 28, 40, ...

C. 3, 8, 13, 18, …

D. 1, –1, –3, -5, …

Choose the correct answer from the options given below:

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How many students failed in all three subjects English, Hindi and Mathematics ?

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How many terms are there in the Arithmetic Progression given below?

7, 13, 19, ..., 205

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Which of the following list of numbers is/are an Arithmetic Progression?

(A) 6, 12, 18, 24…

(B) 1, 3, 5, 7…

(D) 21, 18, 15…

Choose the correct answer from the options given below:

If m−n=16m - n = 16m−n=16 and m2+n2=400m^2 + n^2 = 400m2+n2=400, the value of mn is