What is the eleventh Fibonacci number?
- 55
- 77
- 89
- 144
If F(n) is a Fibonacci number and n =8, which of the following is true?
- F(8) = F(9)+F(10)
- F(8) = F(7)+F(6)
- F(8) = F(10)×F(9)
- F(8) = F(7)–F(6)
Every 3rd number of the Fibonacci sequence is a multiple of
- 2
- 3
- 5
- 8
Every _______ number of the Fibonacci sequence is a multiple of 8
- 2nd
- 4th
- 6th
- 8th
Common prime factors of 30 and 250 are
- 2 x 5
- 3 x 5
- 2 x 3 x 5
- 5 x 5
Common prime factors of 36, 60 and 72 are
- 2 x 2
- 2 x 3
- 3 x 3
- 3 x 2 x 2
Two numbers are said to be co-prime numbers if their HCF is
- 2
- 3
- 0
- 1
Find the HCF of 144 and 120
- 24
- 28
- 32
- 12