Question
What is the least
number which is a perfect square and divisible by 3, 10, 12, and 15?Solution
LCM (3, 10, 12, 15) = 60 60 = 2 × 2 × 3 × 5 Here, 3 and 5 occur only once, and we already have 2 in a pair. To make all prime factors in pairs, multiply by another 3 and 5. ⇒ 60 × 3 × 5 = 900 ∴ 900 is the least perfect square divisible by 3, 10, 12, and 15.
Match Column I and Column II and choose the correct match from the given choice
In the following questions two columns are given containing three sentences/phrases each. In first column, sentences/phrases are A, B and C and in the ...
Column (1)
Column (1)
In the following questions two columns are given. In column-I three sentences are given, each of them consisting of a blank which may or may not be fil...
In the following questions two columns are given containing three sentences/phrases each. In first column, sentences/phrases are A, B and C and in the ...
(A)The Mission launche...
In the following questions two columns are given containing three Sentences/phrases each. In first column, sentences/phrases are A, B and C and in the ...
Match the phrases in Column 1 with the phrases in Column 2.
In each of the following questions, a sentence is given with three blanks. Each question is followed by a table which consists of three columns. You ar...
Relevant for Exams:
