Give range for the following six values 2, 7, 11, 19, 25, 33:
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The members a,b,12 forma geometric progression and the nos a,b,9 form an arithmetic progression. find the value of a+b
If x/y=2/3 then y**2/x**2 is equal to
What is Odd Ratio?
List any two objectives of teaching Mathematics at primary level.
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State the necessary condition for the extreme value.
The imaginary unit I is numerically defined as what?
the solution of the system of equations 2y-z=0,x+3y=-4,3x+4y=3 is
State and prove the sufficient condition for the maximum value of the function f (x,y)
What is the cube root of 729?
ax/b+b=bx/a+a, a//b. then x equals
n radians encompass what percent of a circle?
VOLUNTEER TRAINING FOR DISADVANTAGED IN MATHS – QUESTION 15 : A motel cleaner has 8 master keys at home to open all the rooms in a large motel. Each room can be opened by just 1 of these keys. If 40 % of the rooms are left unlocked, what is the probability that the cleaner can get into a specific room if he selects 3 keys at random before leaving home to go to work? (A) 5 / 8, (B) 5 / 16, (C) 31 / 40, (D) 3 / 20, (E) 19 / 40.