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There are 200 questions on a 3 hour examination. Among these questions are 50 Mathematics problems. It is suggested that twice as much time be spent on each Maths problem as for each other question. How many minutes should be spent on Mathematics problems? (a) 36 (b) 60 (c) 72 (d) 100

The bar graph given below presents the marks (out of 100) obtained by 10 students in a subject. यह दंड आरेख एक विषय में 10 छात्रों के प्राप्तांक ( 100 में से ) को दर्शाता है | The average of marks obtained by S3 and S5 is what percent less than the marks obtained by S9? S3 और S5 के प्राप्तांक का औसत S9 के प्राप्तांक से कितना प्रतिशत कम है ?

What will come in place of question mark (?) . (10)^(0.25) xx (10)^(0.50) xx 10^(0.100)= ?

A 10.0-g bullet traveling horizontally at 755 m/s strikes a stationary target and stops after penetrating 14.5 cm into the target. What is the average force of the target on the bullet ?

What will come in the place of the question mark ‘?’ in the following question? 10% of 100 div 5 = (?)^2 ÷ 72

The pH of 0.5L of 1.0"M NaCl" after the electrolysis for 965 s using 5.0 A current ( 100% efficiency ) is :

An electron beam travelling at a speed of 10^(7) m/s strikes a metal target and absorbed by it. If the mass of the target is 0.5 g its specific heatis 100 cal /kg .^(@)C , find the rate at which its temperature rises. Given that the electron beam curen is 0.048 A.