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10th Maths 15.1

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Chapter 15 Probability Like, Share, and Subscribe. NCERT Class 10th solution of Exercise 14.1 NCERT Class 10th Maths Projects 8th,   9th,   Exercise 15.1 Q1. Complete the following statements: i) Probability of an event E + Probability of the event 'not E' =__________. ii) The probability of an event that cannot happen is _____. Send an event is called __________. iii) The probability of an event that is certain to happen is ______. Such an event is called_____. iv) The sum of the probabilities of all the elementary events of an experiment is called________. v) The probability of an event is greater than or equal to ______ and less than or equal to______. Answer: i) 1      ii) 0, impossible event      iii) 1, sure or certain event      iv) 1      v) 0,1 Q2. Which of the following experiments have equally likely outcomes? Explain. i) A driver attempts to start a car. The car starts or does not start. ii) A p...

9th Maths Objective type questions

Objective type questions Chapter 1 Q1. Match the Columns 1. ab_______________  a) ab 2. ab_______________  b) ab 3. (a+b)(a-b)__ c) a2-b 4.  (a+b)(a-b)________ d) a+2ab+b 5. (a+b)2__________ e) a-b Answer:  1.(b), 2.(a), 3.(e), 4.(c), 5.(d) Q2. Match the Columns 1. ap.aq________________a) apq 2. (ap)q________________b) ap+q 3. apaq________________c) (ab)p 4. apbp________________d)  ap-q Answer: 1.(b), 2.(a), 3.(d), 4.(c) Q3. State whether the following statements are true or false. Give reasons for your answer : i) Every natural number is a whole number. ii) Every integer is a whole number. iii) Every rational number is a whole number. iv) Every whole number is a natural number. v) Every integer is a rational number. vi) Every rational number is an integer. Answer : i) True ii) False iii) False vi) False v) True vi) False  Q4. State ...

10th Maths Objective type Questions

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Chapter 1 Q1. Choose the correct option: 1) The LCM of 6 and 20 is a) 60     b) 2     c) 1     d) 5 2) The HCF of 96 and 404 is a) 120     b) 4     c) 10     d) 7 3) The LCM of 96 and 404 is a) 9696     b) 9797     c) 9898     c) 9897 4) The LCM of 6,72, and 120 is a) 430     b) 360     c) 260     d) 250 5) The HCF of 6,72. and 120 a) 7     b) 8     c) 5     d) 6 Answer: 1)a     2)b     3)a     4)b     5)6 Chapter 2  Q1. Choose the correct option: 1) The zeroes of the polynomial 6x2-3-7x will be a) -13,32     b) -23,34     c) -12,25     d) -17,25 2) The zeroes of the polynomial x2-3 will be a) +3,-3 b) +3,-3 c) 3 d) 5 3) If α and `beta...

10th Maths 10.2

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NCERT Class 10th solution of Exercise 10.1 NCERT Class 10th Maths Projects Exercise 10.2 In Q. 1 to 3, choose the correct option and give justification. 1. From a point Q, the length of the tangent to a circle is 24cm and the distance of Q from the centre is 25cm. The radius of the circle is A) 7cm     B) 12cm     C) 15cm     D) 24.5cm Sol. : In OTQ by Pythagoras theorem OQ2=OT2+QT2 (25)2=(24)2+QT2 625=576+QT2 625-576=QT2 49=QT2 QT2=(7)2 QT=7 Answer: A) 7cm      2. In figure, If TP and TQ are the two tangents to a circle with centre O so that POQ=110, then PTQ is equal to A) 60     B) 70     C) 80     D) 90 Sol. : By angle sum property of a quadrilateral POQ+OPT+OQT+PTQ=360 110+90+90+PTQ=360 `290^cir...