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What value should replace the question mark (?) in the following expression?

\( 12^2 + 16^2 + 24^2 = ? \)

What value should replace the question mark (?) in the following expression?

\( 24 \times 12 + 44 - ? = 45% of 600 \)

What value should come in place of ‘x’ in the following question?

19² – 13² + 15 × 6 – 11² + 19 = x

What value should replace the question mark (?) in the following expression?

80% of 900 + 48% of 1000 - 40% of \( 700 = ? \)

What value should replace the question mark (?) in the following expression?

\( 30^2 \times 192 \div 48 = 900 \times ?^2 \)

What value should replace the question mark (?) in the following expression?

\( 14 \frac{1}{2} + 12 \frac{2}{3} - 10 \frac{1}{6} + 6 \frac{1}{3} = ? \)

What value should replace the question mark (?) in the following expression? \( \frac{6}{8} \) of \( \frac{16}{18} \) of \( \frac{54}{64} \) of \( 9216 = ? \)

Aman invests four times the sum invested by Bhanu and withdraws one-fourth of his sum after 4 months and again withdraws one-fourth of the remaining sum after next 4 months. Find the ratio of profit share of Aman and Bhanu after 1 year.

In a company total 720 employees passed the recruitment test, while 60% of total men passed the recruitment test and 40% of total women passed the recruitment test. If \( 66 \frac{2}{3}% \) of total passed men is 320, then find total employees in the company.

The average age of 12 employees in an office is 70 years. If 4 new employees are added to the office and then the average age of the office is increased by 1 year, then find the age of four new employees?