A regular polygon has 150∘ ∘ as the size of each interior angle. How many sides does it have?

A student spent 15 1 5 of his allowances on books, 13 1 3 of the remainder on food and kept the rest for contingences. What fraction was kept?

A binary operation plus p l u s defined on the set of integers is such that m plus p l u s n = n + mn for all integers m and n. Find the inverse of -5 under ...

A polynomial in x whose roots are 43 4 3 and -25 2 5 is

If Q = (9−2−74) ( 9 − 2 − 7 4 ) , then |Q| is

Find the infinity, the sum of the sequence 1, 910 9 10 , (910 9 10 )2, (910 9 10 )3,...

Solve 52(x - 1) x 5x + 1 = 0.04

If m ∗ ∗ n = n-(m + 2) for any real numbers m and n, find the value of 3 ∗ ∗ (-5)

i. S∩T∩W = S ii. S∪T∪W = W ii. T∩W = S If S⊂ ⊂ T⊂ ⊂ W. Which of the above statements are true?