What is the average height of n people in the group? 1. The average height of n/3 tallest people in the group is 6 feet and the rest average height is 5 feet. 2. The sum of n height is 190 feet. I really doing understand the wording of statment 1. Anyone care to explain. The correct answer is A Sta...

1) By substitution, x = 10 & Y = 5 (x >y) Rent collected in 99 will be more than rent collected in 97 If x = -10 & y = -5. Rent collected in 99 will be less than rent collected in 97 Insufficient 2) xy > 100X-100Y Substitute the same values for X = 10 & -10, get Y values. The Rent collec...

With the stem, we know k is an integer.
From statement 1, 2#k=3 we can deduce that # is addition and k can take the value of 1 only.
From the second statement, we cannot say what the sign is or what the value of k can be. Not Sufficient.

So the answer is A.

But b can be either a positive number or a negative number. which leaves us with -a.b and (-b,a) can be in the first or the second quadrant. If x and y are positive, then (-x,y) will be in the 2nd quadrant. If x and y are negative, coordinates would be in the 4th quadrant. So to me, with both statem...

If we take the first statement, It is in sufficient because 98 is 9 + 8 = 17, is a prime number and 16 is 1+6=7 is a prime number. So we cannot prove that n < 80. Not sufficient. Second statement, if n > 80, every number should have a 8 and a 9. Numbers 8 and 9 are not prime numbers, so anything gre...

There are 216 different possible combinations. Total sum of 3 numbers of each dice can be between 3 and 18. Joe has to get a number greater than 10 which means, out of 16 numbers (sum of 3 dice) possible he can get only 8 numbers greater than 10. 8 is half of 16. So B is the answer.

Let X be even number's count and y be odd number count.

Dice was rolled 21 times. So x+y = 21
From the second statement, 5x+2y = 78

We need both the statements to solve the problem.

Answer is C