Question

Solve The Following Questions:
1) A circle is inscribed in trapezoid PQRS. If PS = QR = 25 cm, PQ = 18 cm and SR = 32 cm, what is the length of the diameter of the circle?

a) 14 cm
b) 25 cm
c) 24 cm
d) [(674)^1/2] cm

2) Find the remainder when 5^2009 + 13^2009 is divided by 18.
a) 0
b) 1
c) 2
d) None Of These

Answer 1

number 2 answer is d

Answer 2

But how? In the answer key, it is given as "a".

Answer 3

i have tried putting it in a calculator but it just keeps telling me error

Answer 4

Ohhhhhhhhhhh

Answer 5

yea sorry im no help but i tried

Answer 6

No prob

Answer 7

answer to the second question is 0

Answer 8

write 5^2009 as (18-13)^2009

expanding this u will realise that all the terms wiil be multiple of 18 except for the term ----13^2009

whih will get cancelled by the 13^2009 already present ,

hence allt he terms will be multiple of 18,
yo

r u also giving IIT

Answer 9

Yeah but after 2 years means in 2014

Answer 10

thats cool if ur solving questions like this from now,

Answer 11

Thanks Bhai.