most important questions of cbse class 10 maths chapter 5 Arithmetic progression❤️
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Answer:
Q.1: Write first four terms of the A.P. when the first term a and the common difference d are given as follows:
(i) a = 10, d = 10
(ii) a = -2, d = 0
(iii) a = 4, d = – 3
Q.2: Which term of the AP: 21, 18, 15, . . . is – 81? Also, is any term 0? Give reason for your answer.
Q.3: Check whether – 150 is a term of the AP: 11, 8, 5, 2 . . .
Q.4: If the 3rd and the 9th terms of an A.P. are 4 and − 8 respectively, then which term of this A.P is zero.
Q.5: Which term of the A.P. 3, 15, 27, 39, … will be 132 more than its 54th term?
Q. 6: How many multiples of 4 lie between 10 and 250?
Q.7: The sum of 4th and 8th terms of an A.P. is 24 and the sum of the 6th and 10th terms is 44. Find the first three terms of the A. P.
Q.8: Ramkali saved Rs 5 in the first week of a year and then increased her weekly saving by Rs 1.75. If in the nth week, fher weekly savings become Rs 20.75, find n.
Step-by-step explanation:
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Step-by-step explanation:
Helium (He), chemical element, inert gas of Group 18 (noble gases) of the periodic table. The second lightest element (only hydrogen is lighter), helium is a colourless, odourless, and tasteless gas that becomes liquid at −268.9 °C (−452 °F)
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