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tank has steps inside it. A monkey is sitting on the topmost step
(i.e., the first step). The water level is at the ninth step.
(i) He jumps 3 steps down and then jumps back 2 steps up. In how many
jumps will he reach the water level?
(ii) After drinking water, he wants to go back. For this, he jumps 4
steps up and then jumps back 2 steps down in every move. In how many
jumps will he reach back the top step?
(iii) If the number of steps moved down is represented by negative
integers and the number of steps moved up by positive integers,
represent his moves in part (i) and (ii) by completing the following;
(a) − 3 + 2 − … = − 8 (b) 4 − 2 + …
= 8. In (a) the sum (− 8) represents going down by eight steps.
So, what will the sum 8 in (b) represent?
The diagonal of a rhombus measure 16cm and 30cm.Find its perimeter
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elevator descends into a mine shaft at the rate of 6 m/min. If the
descent starts from 10 m above the ground level, how long will it
take to reach − 350 m.
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Why are there no NCERT solutions of try these ? Because, in chapter congruence of triangles there is mainly try these and only 2 exercises .
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1) The price of sugar increases by 25%. By what % must a house-wife reduce her consumption so that the expenditure does not increase.
2) In an examination, 95% of candidates passed and 25 failed. How many candidates appeared for the examination?
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