REAL NUMBERS

• (A) an integer

• (B) a natural number

• (C) an odd integer

• (D) an even integer

The HCF (26,169) = 13 then LCM (26,169) is:

• (A) 26

• (B) 52

• (C) 338

• (D) 13

The HCF & LCM of 12, 21, 15 are:

• (A) 3, 140

• (B) 12, 420

• (C) 3,420

• (D) 420, 3

• (A) xy

which if these is rational number?

• (C) 0.3466666

• (D) 0.345210651376643....

The product of two irrational numbers is

• (A) always irrational

• (B) always rational

• (C) rational or irrational

• (D) one

The largest number which divides 70 & 125 leaving remainders 5 & 8 is:

• (A) 13

• (B) 65

• (C) 875

• (D) 1750

The largest number which divides 615 and 963 leaving remained 6 in each case:

• (A) 82

• (B) 95

• (C) 87

• (D) 93

The LCM & HCF of two rational numbers are equal then the numbers must be:

• (A) prime

• (B) composite

• (C) not equal

• (D) equal

HCF (135,225) = 45, find the LCM (135,225)

• (A) 675

• (B) 180

• (C) 315

• (D) 450