When Seeta made necklaces of either 16 beads, 20 beads or 36 beads, not a single bead was left over. What could be the least number of beads Seeta had? (a) 700      (b) 720       (c) 750       (d) 780

How many necklace of 10 beads each can be made from 20 beads of different colours

Solve the following problems. Veena has some beads. She wants to make necklaces with an equal number of beads in each. If she makes necklaces of 16, 24 or 40 beads, there is no bead left over. What is the least number of beads she must have ?

Geeta have 50 red beads, 100 white beads and 120 blue beads. She wants to make similar bracelets so that she can use all beads of each colour. What is the least number of similar bracelets she can make?

In a box,there are a certain number of coins which amount to Rs 25. There are 2 -rupee coins,50 -paise coins and 25 -paise coins.If there are at least one 2 -rupee coin,two 50 - paise coins and two 25 -paise coins,then what could be the minimum number of coins in the box? (a) 12 (b) 14(c) 16(d) 18

The number of ways in which 5 beads of different colours can be made into a necklace is

Three friends returning from a movie, stopped to eat at a restaurant. After dinner, they paid their bill and noticed a bowl of mints, at the front counter. Divya took 1/3 of the mints, but returned four because she had a momentary pang of guilt. Reema then took one-fourth of what was left but returned three for similar reasons. Shweta then took half of the remainder but threw two back into the bowl. The bowl had only 17 mints left when the raid was over. How many mints were originally in the bowl? (a) 31 (b) 38 (c) 41 (d) None of these

The ratio of the number of ladies to that of gents at a pin to was 3:2. When 20 more gents joined the party,the ratio was reversed. The number of ladies present at the party was 16 b.24 c.32 d.36

A class decided to have a party at a total cost of Rs 720. Four students decided to stay out of the party. To meet the expenses the remaining students had to increase their share by Rs 9. What is the original cost per student? (a) Rs 18 (b) Rs 20 (c) Rs 24 (d) Rs 36

Figure shows a distance ring of radius R = 43.0 cm. Two small charged beads are on the ring : Bead 1 of charge +20.0 mu C is fixed in place at the left side , bead 2 of charge +6.00 mu C can be moved along the ring. The two beads produce a net electric field of magnitude e at the center of the ring. At what (a) positive and (b) negative value of angle theta should bead 2 be positioned such that E= 2.00 xx 10^(5) N//C ?

A long helix made of thin wire is held vertical. The radius and pitch of the helix are R and rho respectively. A bead begins to slide down the helix. (a) Find the normal force applied by the wire on the bead when the speed of the bead is upsilon . (b) Eventually, the bead acquires a constant speed of v_(0) . Find the coefficient of friction between the wire and the bead.