If ‘A’ means (÷), ‘B’ means (×), ‘C’ means (+), and ‘D’ means (-), then what is the value of the expression:
24 B 2 C 24 A 4 D 12 B 2
24 B 2 C 24 A 4 D 12 B 2 24 × 2 + 24 ÷ 4 - 12 × 2 24 × 2 + 6 – 12 × 2 = 48 + 6 – 24 = 48 - 18 = 30.
A boat covers 35 km downstream in 2 h and covers the same distance upstream in 7 h. Find the speed (in km/h) of the boat in still water.
What is the difference between the mode and the meaning of the observations?
2,3,4, 5, 6, 7, 8, 12, 9, 12, 5, 12
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