exam Maths Puzzle Numerical Ability

insert two geometric means between 6 and 162

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exam Other Question

Helped by a strong jet stream, a Los Angeles-to-Boston plane flew 10% faster than usual and made the 4400km trip in 30 min. less time than usual. At what speed does the plane usually fly? SCIENCE CONECTED

find the total charge of each sodium
atom. Then decide whether the atom is
an ion. which atom is a symbol of Na+?

chart:

ATOM ELECTRONS