### Pair of Linear Equations in two variables - 3 Puzzles/Games/Activities

Activity

Attempt for this puzzle & see what you obtain and learn.

Class-X (2017–18)

Mathematics

Time allowed: 3 Hours

Max. Marks: 80

General Instructions: (i) All questions are compulsory. (ii) The question paper consists of 30 questions divided into four sections A, B, C and D. (iii)Section A contains 6 questions of 1 mark each. Section B contains 6 questions of 2 marks each. Section C contains 10 questions of 3 marks each. Section D contains 8 questions of 4 marks each. (iv) There is no overall choice. However, an internal choice has been provided in four questions of 3 marks each and three questions of 4 marks each. You have to attempt only one of the alternatives in all such questions. (v) Use of calculators is not permitted.Section A

Question numbers 1 to 6 carry 1 mark each.

1. Write whether the rational number $${7 \over {75}}$$ will have a terminating decimal expansion or a

nor-terminating repeating decimal expansion.

2. Find the value(s) of k, if the quadratic equation $${\rm{3}}{{\rm{x}}^2}{\rm{ - k}}\sqrt 3 {\rm…

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