900 × (10/100) = 90 90 × (20/100) = 18 18 × (30/100) = 5.4 5.4 × (40/100) = 2.16 2.16 × (50/100) = 1.08
26 63 124 215 342 511 ?
...Find the missing term.
D – 4, F – 6, H – 8, J – 10, ?, ?
1 4 13 46 ? 976
...1 9 64 255 755 1835
...If 4 x 4 7 15 38.5
Then, ( x + 1) ( x - 1) = ?
...200 ? 96 38.4 7.68 0
...4 5 12 39 160 ?
...4 5.5 19 .5 98.5 694 6251.5
...If 4 2 x 1.5 0.5
Then, 1/3 x + 2.5 = ?
12 7 10 25 107 ?
...
