Question
A, B, C, D, E and F live on six different floors of the
same building. The lowermost floor in the building is numbered 1, the floor above it, number 2 and so on till the topmost floor is numbered 6. B lives on an odd numbered floor but not on floor number 3. Only three people live between B and C. D lives on an odd number floor below B but not on the lowermost floor. C lives immediately below A. E does not live on the topmost floor. How many people live between A and F?Solution
Simplify the following expression:Â (8x - 6y - 5z)Â 2
When positive numbers x, y and z are divided by 31, the remainders are 17, 24 and 27, respectively. When (4x - 2y + 3z) is divided by 31, the remainder ...
Which of the following statements is correct?
I. If x = 12, y = –2 and z = –10, then x³ + y³
+ z³ = 720
II. If x + y = 48 an...
If (x + y) = 35, then find the value of (x - 10)6 + (y - 25)6.
Find the common factor of (x2Â - 4x - 12) and (x2Â - 14x - 32).
Find the largest 5-digit number that is divisible by 12, 15, 18, and 24. Also, what is the remainder when this number is divided by 11?
The sum of two numbers is 45 and their difference is 9. What is the larger number?
x + y = 4, xy = 2, y + z = 5, yz = 3, z + x = 6 and xz =4, then find the value of x 3  + y 3  + z 3  – 3xyz.
...What is the value of (a² + b²+4c²- ab-2bc-2ca) (a + b+2c):
If (a + b) = 13 and ab = 18, find the value of (a² + b²).
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