Q1) Find the least number which when divided by 5,7,9 and 12, leaves the same remainder 3 in each case.
Q2)Simplify (√5 – 2)(√3 – √5)
Q3) Rationalise the denominator
6-4√2/6+4√2
Pls help very urgent....
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Answer:
1) 504 is the least number exactly divisible by 6,7,8,9 and 12. Hence, least number which when divided by 6,7,8,9 and 12 leaves remainder 2 in each case=504+2=506.
2) √110-15-2+√6.
3) (6−42)(6−42)
⇒(6)2−(42)2(6−42)2
⇒36−3236+32−482
=468−482
=17−122.
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