General Maths Puzzle Logical Reasoning Direction Sense

1, -1, 2, -3, 4, -7, 6, -11, 8, -15, 14, ----------

Read Solution (Total 1)

there differences are
-2,3,-5,7,-11,13,-17,19,-23,29,-31(all are prime nos.)
hence Ans is -17
7 years agoHelpfull: Yes(1) No(0)

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Thanks Present ages of Sameer and Anand are in the ratio of 10 : 8 respectively. Three years hence, the ratio of their ages will become 22 :18 respectively. What is Anand's present age in years?