Hard q's FOR ME

golu23 wrote:1)The avg and std deviation of a certain normal distribution are 13.5 &1.5 resp.
What vallue is exactly 2 std deviation lessthan the mean?
a)10.5 b)11.0 c)11.5 d)12.0 e)12.5

2) The area of a square garden is "A" sqft & perimtr is P.iF A=2p+9 P=?
A)28 B)36 c)40 d)56 e)64


7)jOHUA AND jOSE WORK AT auto repaie shop along with 4 others.
What is the probablity the J
oshua and jose will be chosen for a programme
a)1/15 b)1/12 c)1/9 d)1/6 e)1/3

IMO, answers are:
1) Option A
2) Option B
3) Option D

Please post PS questions here -> https://www.beatthegmat.com/problem-solving-f6.html

3 Data Suff)A child selected 3 digit no XYZ which denotees digitsof the no.
If none of'em are equal what's the no.
A)Sum of digits is 10
B)X<Y<Z

4)IS THE POSITIVE INTEGER N odd
a)N=2K+1
B)2n+1 i understood this on but not the first one

5)If N is product of least and greatest of 6 consecutive integers n=?
a)THE GREATEST CONS INT IS 20
B)THE AVG OF 6 CONS INT IS 17.5

6)Jne walked for 4 miles What was her avg speed for 2 miles?
1) HER AVG PEEED FOR 4 MILES WAS 3.2KMPH
2)IT TOOK JANE 15 MINS LONGER TO WALK THE SECOND 2 MILES THAN FIRST 2 MILW