IBPS PO Prelims Model Paper 5 with solutions

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DIRECTIONS (Qs. 11-15): What should come in place of question mark (? ) in the following number series ?
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Question : 18 of 100
 
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The average of five positive numbers is 213. The average of the first two numbers is 233.5 and the average of last two numbers is 271. What is the third number ?
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