The 3rd and 7th term of an arithmetic progression are -9 and 11 respectively. What is the 15th term?
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The product of two numbers is 40. One of them is 2.50. What is the other number?
In the series 5442673314884743581,the number of 4s that are completely divisible by the number on their right but not divisible by the number on their left is
The sum of two digits of a number is 10. If the digits are interchanged, then its value increases by 18. Find the number.
Find the greatest number which on dividing 1580 and 3800 leaves remainders 8 and 1 respectively.
Which of the numbers given below is NOT rational?
If 3cos2x - 2sin2x = -0.75 and 0°⩽ x ⩽ 90°, then x = ?
What is the value of cos 11π/6?