In an examination, a student scores 4 marks for every correct answer and loses 1 mark for every wrong answer. If he attempts all 60 questions and secures 130 marks, the no of questions he attempts correctly is :
Let the number of correct answers be X.
Number of incorrect answers = (60 – X).
4x – (60 – x) = 130
=> 5x = 190
=> x = 38
Which of the following statement (s) is/are TRUE?
I. 4√3 > 3√4
II. 8√2 > 2√8
What is the area (in square units) of the figure enclosed by the x-axis, the y-axis and the line x + 2y = 6 ?
A crate of egg holds one rotten egg out of every 25 egg in it. If 5 out of 8 rotten eggs are unusable and there are total 10 unusable eggs in the crate,then calculate the number of eggs in the crate.
Calculate the value of 0.77777 + 0.7777 + 0.777 + 0.77 + 0.7 + 0.07.
If Sec θ = 13/12, then what is the value of Sin θ?
∆XYZ is right angled at Y. If m ∠Z = 60. What is the length (in cm) of YZ, if ZX = 9√3 cm?
What is the value of Sin 30- √2 Cos 30
D and E are points on side AB and AC of ΔABC. DE is parallel to BC. If AD:DB = 2:5 and area of ΔADE is 8 cm sq, what is the area (in sq cm) of quadrilateral BDEC?
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