+44 is the international calling code for all of the United Kingdom, not just England. You would then follow the +44 with the rest of the UK number, omitting the first 0.
For example, the (fictional) mobile number 07700 900123 becomes +44 7700 900123.
(The plus sign means "insert your international access prefix here." From a GSM mobile phone, you can enter the number in full international format, starting with the plus sign. The most common prefix is 00, but North America (USA, Canada, etc.) uses 011, Japan uses 010, Australia uses 0011, and many other countries use different prefixes.)
That is part of a Nigerian mobile number. +234 is the international code for Nigeria - and mobile numbers start with 80 (amongst others)
No, not all. All numbers are Real Numbers. * * * * * All numbers are not real numbers: there are complex numbers and others. Also, all real number are not whole numbers. sqrt(2) or pi, for example are real numbers but not whole numbers.
you cannot multiply by others numbers only by 1 and the number itself
No, 55 is not a square number. Square numbers are numbers like this: 16, 25, 36 and 100 and heaps of others.
It is 32 and the others are prime numbers
Actually, it doesn't. At least, it is not 10 digits all over the world. For example, in Bolivia, the mobile phone number has only 8 digits. The number of digits required (for any particular country) can depend on the following:The number of mobile phones (or similar devices) used. If in some country you have, say, 5 million mobile devices, you need at least seven digits.Mobile numbers may have to start with certain digits. This may require an additional digit. In the above example, if in a country all mobile phone numbers start with 6, 7 or 8, then 7 digits are no longer enough - the minimum requirement is 8 digits.The numbers may be organized so that the first few digits identify the phone company, or the geographical region. This also tends to increase the number of digits, since some areas will have few numbers, while others will have many.
Negative integers are whole numbers but not natural numbers. Mathematicians are undecided about zero. It is a whole number: some believe zero is a natural number, others do not.
196 is not a prime number; it is divisible by several numbers such as 2, 4, and others.
Square numbers have an odd number of factors. All others are even.
There are a number of places where a Siemens mobile phone could be purchased. These include Amazon, Carphone Warehouse, Tesco and Argos amongst others.
The answer depends on your familiarity with number bonds.
Lowest (or Least) Common Multiple.