Related Questions

In a city 40% of the people have black hair, 25% have black eyes and 10% have both black hair and black eyes. What percentage of the people in the city has neither black hair nor black eyes?
ক 35
খ 40
গ 45
ঘ 50
In a certain city 40% of the people have black hair, 25% have black eyes and 10% have both black hair and black eyes. What percentage of the people in the city have neither black hair nor black eyes?
ক 35
খ 40
গ 45
ঘ 50
The first ever image of a Black Hole at the center of the M87 Galaxy could be photographed using a telescope system called
ক Hubble Telescope
খ Mount Palomar Telescope
গ Mount Palomar Obsrvatory
ঘ Event Horizon Telescope
What does the underlined word mean in the following sentence?The old man's house, badly in need of paint, was leaning to one side and had holes in the roof, but one side and had holes in the roof, but
ক poorly built
খ old-fashioned
গ run down
ঘ dirty
An intrinsic semiconductor has some holes in it at room temperature. What causes these holes?
ক Doping
খ Valence electrons
গ Free electrons
ঘ Thermal energy
ঙ None of the above
image of a black hole. Which black hole was the subject of this historic image?
ক Sagittarius A
খ Cygnus X-I
গ Messier 87 (M87)
ঘ V404 Cygni
A basket contains four balls of four diffirent colors -white red, black and green which will be distributed among for persons Rajib, Litu, Simu, and Rida. Rida must not be given the black one. Simu not be given either the black one or the green one. If the above conditions are fulfilled, Which of the following must be true?
ক Simu will be given the red one
খ Lity will given the black one
গ Rida will be given the green one
ঘ All of these
A box contains 200 marbles, 25% of which are of black colour. Babu took some marbles from the box found that 30% of them are black. Of the remaining marbles, 10% were black marbles. How many marbles did Babu take?
ক 120
খ 125
গ 150
ঘ None of these
Black holes are produced by-
ক huge black milk ways
খ the energy of the huge sun
গ huge sun
ঘ huge stars
When a simple data type is casted to an array, an array is created with the original value in the first element.
ক True
খ False

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