Question
Match the following inventions with it’s
Inventors. A. Microscope                     1. D.G. Fahrenheit B. Thermometer          2. D. Hughes C. Barometer                       3. Z. Jansen D. Microphone                    4. E. TorricelliÂSolution
Microscope was invented by Z. Jansen in 1590 Thermometer was invented by Daniel Gabriel Fahrenheit in 1714 Barometer was invented by E. Torricelli in 1644 Microphone was invented by David Hughes in 1878
The value of the expression (1 + sec22° + cot68°)(1 – cosec22° + tan68°) is
If α and β are the roots of equation x2 – x + 1 = 0, then which equation will have roots α3 and β3?
...The value of = 3/4 ÷ 3/4 of 4/3 + 5/2 ÷ 2/5 of 5/4 – (2/3 + 2/3 of 5/6) is :
Quantity I – 3
Quantity II – 254
If > 0 and < 0
If a + 1/a = -2 then the value of a1000 + a- 1000 is
x, y and z are real numbers. If x3Â + y3Â + z3Â = 13,x + y + z = 1 and xyz = 1, then what is the value of xy + yz + zx?...
If -5 ≤ x ≤ 3 and -1 ≤ y ≤ 0, then the minimum value of 2y – 3x is:
If the nine-digit number 43x1145y2 is divisible by 88, then the value of (3x — 2y), for the smallest value of y, is:
If 2cos2 Ɵ – 5cos Ɵ + 2 = 0,00 < Ɵ < 900 , then the value of (cosec Ɵ + cot Ɵ) is :
If (a + b)/c = 6/5 and (b + c)/a = 9/2, then what is the value of (a + c)/b?
Relevant for Exams:
