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The simple interest on a sum of money for 2 years at 6% per annum is ₹ 90. Find the total amount on the same sum for half the time at double the rate per annum, compounded annually.

Which of the following words cannot be formed using the letters of the word "DEVELOPMENT" ?

Three machines in a factory make a beep sound after finishing their cycle times. Machine A beeps every 18 seconds, Machine B beeps every 30 seconds, and Machine C beeps every 45 seconds. If they all beep together at 8:00:00 a.m., what will be the next time they all beep together ?

Simplify the following expression :

$100 \div (2 \times 5) + 3 = ?$

Given $x + y = 20$ and $xy = 51$, find the value of x and y.

A metallic sheet is of rectangular shape with dimensions $148 \text{ m} \times 136 \text{ m}$. From each of its corners, a square is cut off so as to make an open box. If the length of the square is $6 \text{ m}$, the volume of the box (in $\text{m}^3$) is :

Saiyad is facing south. He turns $135^{\circ}$ anticlockwise, then $225^{\circ}$ clockwise, followed by $90^{\circ}$ anticlockwise and finally $45^{\circ}$ clockwise. Which direction is he facing now?

Observe the given diagram and answer the following question.

Which number represents the Indians who are both tall and fair?

Jitesh moves 70 meters west, then turns right and walks 35 meters. Next, he turns left and covers 40 meters, then takes a right turn and walks 20 meters. In which direction is Jitesh with respect to his starting point?

In a test, Student B scored 20% fewer marks than Student A. If B scored 72 marks, by what percentage did A score more marks than B?